Initial commit (#279).

src/main/java/org/gitlab4j/api/DiscussionsApi.java

+package org.gitlab4j.api;
+
+import java.util.List;
+import java.util.stream.Stream;
+
+import javax.ws.rs.core.GenericType;
+import javax.ws.rs.core.Response;
+
+import org.gitlab4j.api.models.Discussion;
+
+/**
+ * This class implements the client side API for the GitLab Discussions API.
+ * See <a href="https://docs.gitlab.com/ee/api/discussions.html">Discussions API at GitLab</a> for more information.
+ */
+public class DiscussionsApi extends AbstractApi {
+
+    public DiscussionsApi(GitLabApi gitLabApi) {
+        super(gitLabApi);
+    }
+
+
+    /**
+     * Get a list of all discussions for the specified issue.
+     *
+     * GET /projects/:id/issues/:issue_iid/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param issueIid the internal ID of the issue
+     * @return a list containing all the discussions for the specified issue
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public List<Discussion> getIssueDiscussions(Object projectIdOrPath, Integer issueIid) throws GitLabApiException {
+        Pager<Discussion> pager = getIssueDiscussionsPager(projectIdOrPath, issueIid, getDefaultPerPage());
+        return (pager.all());
+    }
+ 
+    /**
+     * Get a list of discussions for the specified issue.
+     *
+     * GET /projects/:id/issues/:issue_iid/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param issueIid the internal ID of the issue
+     * @param maxItems the maximum number of Discussion instances to get, if &lt; 1 will fetch all Discussion instances for the issue
+     * @return a list containing the discussions for the specified issue
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public List<Discussion> getIssueDiscussions(Object projectIdOrPath, Integer issueIid, int maxItems) throws GitLabApiException {
+        if (maxItems < 1) {
+            return (getIssueDiscussions(projectIdOrPath, issueIid));
+        } else {
+            Response response = get(Response.Status.OK, getPerPageQueryParam(maxItems),
+                "projects", getProjectIdOrPath(projectIdOrPath), "issues", issueIid, "discussions");
+            return (response.readEntity(new GenericType<List<Discussion>>() {}));
+        }
+    }
+
+    /**
+     * Get a Pager of Discussion instances for the specified issue.
+     *
+     * GET /projects/:id/issues/:issue_iid/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param issueIid the internal ID of the issue
+     * @param itemsPerPage the number of Discussion instances that will be fetched per page
+     * @return a Pager containing the Discussion instances for the specified issue
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public Pager<Discussion> getIssueDiscussionsPager(Object projectIdOrPath, Integer issueIid, int itemsPerPage) throws GitLabApiException {
+        return (new Pager<Discussion>(this, Discussion.class, itemsPerPage, null,
+              "projects", getProjectIdOrPath(projectIdOrPath), "issues", issueIid, "discussions"));
+    }
+
+    /**
+     * Get a Stream of Discussion instances for the specified issue.
+     *
+     * GET /projects/:id/issues/:issue_iid/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param issueIid the internal ID of the issue
+     * @return a Stream instance containing the Discussion instances for the specified issue
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public Stream<Discussion> getIssueDiscussionsStream(Object projectIdOrPath, Integer issueIid) throws GitLabApiException {
+        Pager<Discussion> pager = getIssueDiscussionsPager(projectIdOrPath, issueIid, getDefaultPerPage());
+        return (pager.stream());
+    }
+
+    /**
+     * Get a list of all discussions for the specified snippet.
+     *
+     * GET /projects/:id/snippets/:snippet_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param snippetId the ID of the snippet
+     * @return a list containing all the discussions for the specified snippet
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public List<Discussion> getSnippetDiscussions(Object projectIdOrPath, Integer snippetId) throws GitLabApiException {
+        Pager<Discussion> pager = getSnippetDiscussionsPager(projectIdOrPath, snippetId, getDefaultPerPage());
+        return (pager.all());
+    }
+ 
+    /**
+     * Get a list of discussions for the specified snippet.
+     *
+     * GET /projects/:id/snippets/:snippet_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param snippetId the ID of the snippet
+     * @param maxItems the maximum number of Discussion instances to get, if &lt; 1 will fetch all Discussion instances for the snippet
+     * @return a list containing the discussions for the specified snippet
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public List<Discussion> getSnippetDiscussions(Object projectIdOrPath, Integer snippetId, int maxItems) throws GitLabApiException {
+        if (maxItems < 1) {
+            return (getSnippetDiscussions(projectIdOrPath, snippetId));
+        } else {
+            Response response = get(Response.Status.OK, getPerPageQueryParam(maxItems),
+                "projects", getProjectIdOrPath(projectIdOrPath), "snippets", snippetId, "discussions");
+            return (response.readEntity(new GenericType<List<Discussion>>() {}));
+        }
+    }
+
+    /**
+     * Get a Pager of Discussion instances for the specified snippet.
+     *
+     * GET /projects/:id/snippets/:snippet_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param snippetId the ID of the snippet
+     * @param itemsPerPage the number of Discussion instances that will be fetched per page
+     * @return a Pager containing the Discussion instances for the specified snippet
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public Pager<Discussion> getSnippetDiscussionsPager(Object projectIdOrPath, Integer snippetId, int itemsPerPage) throws GitLabApiException {
+        return (new Pager<Discussion>(this, Discussion.class, itemsPerPage, null,
+              "projects", getProjectIdOrPath(projectIdOrPath), "snippets", snippetId, "discussions"));
+    }
+
+    /**
+     * Get a Stream of Discussion instances for the specified snippet.
+     *
+     * GET /projects/:id/snippets/:snippet_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param snippetId the ID of the snippet
+     * @return a Stream instance containing the Discussion instances for the specified snippet
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public Stream<Discussion> getSnippetDiscussionsStream(Object projectIdOrPath, Integer snippetId) throws GitLabApiException {
+        Pager<Discussion> pager = getSnippetDiscussionsPager(projectIdOrPath, snippetId, getDefaultPerPage());
+        return (pager.stream());
+    }
+
+
+    /**
+     * Get a list of all discussions for the specified epic.
+     *
+     * GET /projects/:id/epics/:epic_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param epicId the internal ID of the epic
+     * @return a list containing all the discussions for the specified epic
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public List<Discussion> getEpicDiscussions(Object projectIdOrPath, Integer epicId) throws GitLabApiException {
+        Pager<Discussion> pager = getEpicDiscussionsPager(projectIdOrPath, epicId, getDefaultPerPage());
+        return (pager.all());
+    }
+ 
+    /**
+     * Get a list of discussions for the specified epic.
+     *
+     * GET /projects/:id/epics/:epic_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param epicId the internal ID of the epic
+     * @param maxItems the maximum number of Discussion instances to get, if &lt; 1 will fetch all Discussion instances for the epic
+     * @return a list containing the discussions for the specified epic
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public List<Discussion> getEpicDiscussions(Object projectIdOrPath, Integer epicId, int maxItems) throws GitLabApiException {
+        if (maxItems < 1) {
+            return (getEpicDiscussions(projectIdOrPath, epicId));
+        } else {
+            Response response = get(Response.Status.OK, getPerPageQueryParam(maxItems),
+                "projects", getProjectIdOrPath(projectIdOrPath), "epics", epicId, "discussions");
+            return (response.readEntity(new GenericType<List<Discussion>>() {}));
+        }
+    }
+
+    /**
+     * Get a Pager of Discussion instances for the specified epic.
+     *
+     * GET /projects/:id/epics/:epic_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param epicId the internal ID of the epic
+     * @param itemsPerPage the number of Discussion instances that will be fetched per page
+     * @return a Pager containing the Discussion instances for the specified epic
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public Pager<Discussion> getEpicDiscussionsPager(Object projectIdOrPath, Integer epicId, int itemsPerPage) throws GitLabApiException {
+        return (new Pager<Discussion>(this, Discussion.class, itemsPerPage, null,
+              "projects", getProjectIdOrPath(projectIdOrPath), "epics", epicId, "discussions"));
+    }
+
+    /**
+     * Get a Stream of Discussion instances for the specified epic.
+     *
+     * GET /projects/:id/epics/:epic_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param epicId the internal ID of the epic
+     * @return a Stream instance containing the Discussion instances for the specified epic
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public Stream<Discussion> getEpicDiscussionsStream(Object projectIdOrPath, Integer epicId) throws GitLabApiException {
+        Pager<Discussion> pager = getEpicDiscussionsPager(projectIdOrPath, epicId, getDefaultPerPage());
+        return (pager.stream());
+    }
+
+    /**
+     * Get a list of all discussions for the specified merge request.
+     *
+     * GET /projects/:id/merge_requests/:merge_request_iid/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param mergeRequestIid the internal ID of the merge request
+     * @return a list containing all the discussions for the specified merge request
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public List<Discussion> getMergeRequestDiscussions(Object projectIdOrPath, Integer mergeRequestIid) throws GitLabApiException {
+        Pager<Discussion> pager = getMergeRequestDiscussionsPager(projectIdOrPath, mergeRequestIid, getDefaultPerPage());
+        return (pager.all());
+    }
+ 
+    /**
+     * Get a list of discussions for the specified merge request.
+     *
+     * GET /projects/:id/merge_requests/:merge_request_iid/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param mergeRequestIid the internal ID of the merge request
+     * @param maxItems the maximum number of Discussion instances to get, if &lt; 1 will fetch all Discussion instances for the merge request
+     * @return a list containing the discussions for the specified merge request
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public List<Discussion> getMergeRequestDiscussions(Object projectIdOrPath, Integer mergeRequestIid, int maxItems) throws GitLabApiException {
+        if (maxItems < 1) {
+            return (getMergeRequestDiscussions(projectIdOrPath, mergeRequestIid));
+        } else {
+            Response response = get(Response.Status.OK, getPerPageQueryParam(maxItems),
+                "projects", getProjectIdOrPath(projectIdOrPath), "merge_requests", mergeRequestIid, "discussions");
+            return (response.readEntity(new GenericType<List<Discussion>>() {}));
+        }
+    }
+
+    /**
+     * Get a Pager of Discussion instances for the specified merge request.
+     *
+     * GET /projects/:id/merge_requests/:merge_request_iid/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param mergeRequestIid the internal ID of the merge request
+     * @param itemsPerPage the number of Discussion instances that will be fetched per page
+     * @return a Pager containing the Discussion instances for the specified merge request
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public Pager<Discussion> getMergeRequestDiscussionsPager(Object projectIdOrPath, Integer mergeRequestIid, int itemsPerPage) throws GitLabApiException {
+        return (new Pager<Discussion>(this, Discussion.class, itemsPerPage, null,
+              "projects", getProjectIdOrPath(projectIdOrPath), "merge_requests", mergeRequestIid, "discussions"));
+    }
+
+    /**
+     * Get a Stream of Discussion instances for the specified merge request.
+     *
+     * GET /projects/:id/issues/:issue_iid/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param mergeRequestIid the internal ID of the merge request
+     * @return a Stream instance containing the Discussion instances for the specified issue
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public Stream<Discussion> getMergeRequestDiscussionsStream(Object projectIdOrPath, Integer mergeRequestIid) throws GitLabApiException {
+        Pager<Discussion> pager = getMergeRequestDiscussionsPager(projectIdOrPath, mergeRequestIid, getDefaultPerPage());
+        return (pager.stream());
+    }
+
+    /**
+     * Get a list of all discussions for the specified commit.
+     *
+     * GET /projects/:id/commits/:commit_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param commitId the internal ID of the commit
+     * @return a list containing all the discussions for the specified commit
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public List<Discussion> getCommitDiscussions(Object projectIdOrPath, Integer commitId) throws GitLabApiException {
+        Pager<Discussion> pager = getCommitDiscussionsPager(projectIdOrPath, commitId, getDefaultPerPage());
+        return (pager.all());
+    }
+ 
+    /**
+     * Get a list of discussions for the specified commit.
+     *
+     * GET /projects/:id/commits/:commit_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param commitId the internal ID of the commit
+     * @param maxItems the maximum number of Discussion instances to get, if &lt; 1 will fetch all Discussion instances for the commit
+     * @return a list containing the discussions for the specified commit
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public List<Discussion> getCommitDiscussions(Object projectIdOrPath, Integer commitId, int maxItems) throws GitLabApiException {
+        if (maxItems < 1) {
+            return (getCommitDiscussions(projectIdOrPath, commitId));
+        } else {
+            Response response = get(Response.Status.OK, getPerPageQueryParam(maxItems),
+                "projects", getProjectIdOrPath(projectIdOrPath), "commits", commitId, "discussions");
+            return (response.readEntity(new GenericType<List<Discussion>>() {}));
+        }
+    }
+
+    /**
+     * Get a Pager of Discussion instances for the specified commit.
+     *
+     * GET /projects/:id/commits/:commit_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param commitId the internal ID of the commit
+     * @param itemsPerPage the number of Discussion instances that will be fetched per page
+     * @return a Pager containing the Discussion instances for the specified commit
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public Pager<Discussion> getCommitDiscussionsPager(Object projectIdOrPath, Integer commitId, int itemsPerPage) throws GitLabApiException {
+        return (new Pager<Discussion>(this, Discussion.class, itemsPerPage, null,
+              "projects", getProjectIdOrPath(projectIdOrPath), "commits", commitId, "discussions"));
+    }
+
+    /**
+     * Get a Stream of Discussion instances for the specified commit.
+     *
+     * GET /projects/:id/commits/:commit_id/discussions
+     *
+     * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param commitId the internal ID of the commit
+     * @return a Stream instance containing the Discussion instances for the specified commit
+     * @throws GitLabApiException GitLabApiException if any exception occurs during execution
+     */
+    public Stream<Discussion> getCommitDiscussionsStream(Object projectIdOrPath, Integer commitId) throws GitLabApiException {
+        Pager<Discussion> pager = getCommitDiscussionsPager(projectIdOrPath, commitId, getDefaultPerPage());
+        return (pager.stream());
+    }
+}

src/test/java/org/gitlab4j/api/JsonUtils.java

+package org.gitlab4j.api;
+
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.List;
+import java.util.Map;
+
+import org.gitlab4j.api.utils.JacksonJson;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.MapperFeature;
+import com.fasterxml.jackson.databind.SerializationFeature;
+
+public class JsonUtils {
+    
+    private static JacksonJson jacksonJson;
+    static {
+        jacksonJson = new JacksonJson();
+        jacksonJson.getObjectMapper().configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);
+        jacksonJson.getObjectMapper().configure(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY, true);
+    }
+    
+
+    static <T> T unmarshal(Class<T> returnType, String filename) throws JsonParseException, JsonMappingException, IOException {
+        InputStreamReader reader = new InputStreamReader(GitLabApi.class.getResourceAsStream(filename));
+        return (jacksonJson.unmarshal(returnType, reader));
+    }
+
+    static <T> List<T> unmarshalList(Class<T> returnType,  String filename) throws JsonParseException, JsonMappingException, IOException {
+        InputStreamReader reader = new InputStreamReader(GitLabApi.class.getResourceAsStream(filename));
+        return (jacksonJson.unmarshalList(returnType, reader));
+    }
+
+    static <T> Map<String, T> unmarshalMap(Class<T> returnType,  String filename) throws JsonParseException, JsonMappingException, IOException {
+        InputStreamReader reader = new InputStreamReader(GitLabApi.class.getResourceAsStream(filename));
+        return (jacksonJson.unmarshalMap(returnType, reader));
+    }
+
+    static <T> boolean compareJson(T apiObject, String filename) throws IOException {
+
+        InputStreamReader reader = new InputStreamReader(GitLabApi.class.getResourceAsStream(filename));
+        String objectJson = jacksonJson.marshal(apiObject);
+        JsonNode tree1 = jacksonJson.getObjectMapper().readTree(objectJson.getBytes());
+        JsonNode tree2 = jacksonJson.getObjectMapper().readTree(reader);
+
+        boolean sameJson = tree1.equals(tree2);
+        if (!sameJson) {
+            System.err.println("JSON did not match:");
+            sortedDump(tree1);
+            sortedDump(tree2);
+        }
+
+        return (sameJson);
+    }
+
+    static void sortedDump(final JsonNode node) throws JsonProcessingException {
+        final Object obj = jacksonJson.getObjectMapper().treeToValue(node, Object.class);
+        System.out.println(jacksonJson.getObjectMapper().writeValueAsString(obj));
+        System.out.flush();
+    }
+}

src/test/resources/org/gitlab4j/api/commit-discussions.json

+[
+  {
+    "id": "6a9c1750b37d513a43987b574953fceb50b03ce7",
+    "individual_note": false,
+    "notes": [
+      {
+        "id": 1126,
+        "type": "DiscussionNote",
+        "body": "discussion text",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-03T21:54:39.668Z",
+        "updated_at": "2018-03-03T21:54:39.668Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Commit",
+        "resolvable": false
+      },
+      {
+        "id": 1129,
+        "type": "DiscussionNote",
+        "body": "reply to the discussion",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-04T13:38:02.127Z",
+        "updated_at": "2018-03-04T13:38:02.127Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Commit",
+        "resolvable": false
+      }
+    ]
+  },
+  {
+    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
+    "individual_note": true,
+    "notes": [
+      {
+        "id": 1128,
+        "body": "a single comment",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-04T09:17:22.520Z",
+        "updated_at": "2018-03-04T09:17:22.520Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Commit",
+        "resolvable": false
+      }
+    ]
+  }
+]
\ No newline at end of file

src/test/resources/org/gitlab4j/api/epic-discussions.json

+[
+  {
+    "id": "6a9c1750b37d513a43987b574953fceb50b03ce7",
+    "individual_note": false,
+    "notes": [
+      {
+        "id": 1126,
+        "type": "DiscussionNote",
+        "body": "discussion text",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-03T21:54:39.668Z",
+        "updated_at": "2018-03-03T21:54:39.668Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Epic",
+        "resolvable": false
+      },
+      {
+        "id": 1129,
+        "type": "DiscussionNote",
+        "body": "reply to the discussion",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-04T13:38:02.127Z",
+        "updated_at": "2018-03-04T13:38:02.127Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Epic",
+        "resolvable": false
+      }
+    ]
+  },
+  {
+    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
+    "individual_note": true,
+    "notes": [
+      {
+        "id": 1128,
+        "body": "a single comment",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-04T09:17:22.520Z",
+        "updated_at": "2018-03-04T09:17:22.520Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Epic",
+        "resolvable": false
+      }
+    ]
+  }
+]
\ No newline at end of file

src/test/resources/org/gitlab4j/api/issue-discussions.json

+[
+  {
+    "id": "6a9c1750b37d513a43987b574953fceb50b03ce7",
+    "individual_note": false,
+    "notes": [
+      {
+        "id": 1126,
+        "type": "DiscussionNote",
+        "body": "discussion text",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-03T21:54:39.668Z",
+        "updated_at": "2018-03-03T21:54:39.668Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Issue"
+      },
+      {
+        "id": 1129,
+        "type": "DiscussionNote",
+        "body": "reply to the discussion",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-04T13:38:02.127Z",
+        "updated_at": "2018-03-04T13:38:02.127Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Issue",
+        "resolvable": false
+      }
+    ]
+  },
+  {
+    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
+    "individual_note": true,
+    "notes": [
+      {
+        "id": 1128,
+        "body": "a single comment",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-04T09:17:22.520Z",
+        "updated_at": "2018-03-04T09:17:22.520Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Issue",
+        "resolvable": false
+      }
+    ]
+  }
+]
\ No newline at end of file

src/test/resources/org/gitlab4j/api/merge-request-discussions.json

+[
+  {
+    "id": "6a9c1750b37d513a43987b574953fceb50b03ce7",
+    "individual_note": false,
+    "notes": [
+      {
+        "id": 1126,
+        "type": "DiscussionNote",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-03T21:54:39.668Z",
+        "updated_at": "2018-03-03T21:54:39.668Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Merge request",
+        "resolved": false,
+        "resolvable": true
+      },
+      {
+        "id": 1129,
+        "type": "DiscussionNote",
+        "body": "reply to the discussion",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-04T13:38:02.127Z",
+        "updated_at": "2018-03-04T13:38:02.127Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Merge request",
+        "resolved": false,
+        "resolvable": true
+      }
+    ]
+  },
+  {
+    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
+    "individual_note": true,
+    "notes": [
+      {
+        "id": 1128,
+        "body": "a single comment",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-04T09:17:22.520Z",
+        "updated_at": "2018-03-04T09:17:22.520Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Merge request",
+        "resolved": false,
+        "resolvable": true
+      }
+    ]
+  }
+]
\ No newline at end of file

src/test/resources/org/gitlab4j/api/snippet-discussions.json

+[
+  {
+    "id": "6a9c1750b37d513a43987b574953fceb50b03ce7",
+    "individual_note": false,
+    "notes": [
+      {
+        "id": 1126,
+        "type": "DiscussionNote",
+        "body": "discussion text",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-03T21:54:39.668Z",
+        "updated_at": "2018-03-03T21:54:39.668Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Snippet"
+      },
+      {
+        "id": 1129,
+        "type": "DiscussionNote",
+        "body": "reply to the discussion",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-04T13:38:02.127Z",
+        "updated_at": "2018-03-04T13:38:02.127Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Snippet",
+        "resolvable": false
+      }
+    ]
+  },
+  {
+    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
+    "individual_note": true,
+    "notes": [
+      {
+        "id": 1128,
+        "body": "a single comment",
+        "author": {
+          "id": 1,
+          "name": "root",
+          "username": "root",
+          "state": "active",
+          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
+          "web_url": "http://localhost:3000/root"
+        },
+        "created_at": "2018-03-04T09:17:22.520Z",
+        "updated_at": "2018-03-04T09:17:22.520Z",
+        "system": false,
+        "noteable_id": 3,
+        "noteable_type": "Snippet",
+        "resolvable": false
+      }
+    ]
+  }
+]
\ No newline at end of file