Changed processing of whitespace on content properties (#136).

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

@@ -48,8 +48,8 @@ public class GitLabApiForm extends Form {
             return (this);
         }
 
-        String stringValue = value.toString().trim();
-        if (required && stringValue.length() == 0) {
+        String stringValue = value.toString();
+        if (required && stringValue.trim().length() == 0) {
             throw new IllegalArgumentException(name + " cannot be empty or null");
         }
 

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

@@ -86,7 +86,7 @@ public class RepositoryFileApi extends AbstractApi {
      * @throws GitLabApiException if any exception occurs
      */
     public RepositoryFile createFile(RepositoryFile file, Integer projectId, String branchName, String commitMessage) throws GitLabApiException {
-        Form formData = file2form(file, branchName, commitMessage);
+        Form formData = createForm(file, branchName, commitMessage);
         Response response;
         if (isApiVersion(ApiVersion.V3)) {
             response = post(Response.Status.CREATED, formData, "projects", projectId, "repository", "files");
@@ -116,7 +116,7 @@ public class RepositoryFileApi extends AbstractApi {
      * @throws GitLabApiException if any exception occurs
      */
     public RepositoryFile updateFile(RepositoryFile file, Integer projectId, String branchName, String commitMessage) throws GitLabApiException {
-        Form formData = file2form(file, branchName, commitMessage);
+        Form formData = createForm(file, branchName, commitMessage);
         Response response;
         if (isApiVersion(ApiVersion.V3)) {
             response = put(Response.Status.OK, formData.asMap(), "projects", projectId, "repository", "files");
@@ -215,7 +215,7 @@ public class RepositoryFileApi extends AbstractApi {
         return (response.readEntity(InputStream.class));
     }
 
-    private Form file2form(RepositoryFile file, String branchName, String commitMessage) {
+    private Form createForm(RepositoryFile file, String branchName, String commitMessage) {
 
         Form form = new Form();
         if (isApiVersion(ApiVersion.V3)) {
@@ -228,6 +228,6 @@ public class RepositoryFileApi extends AbstractApi {
         addFormParam(form, "encoding", file.getEncoding(), false);
         addFormParam(form, "content", file.getContent(), true);
         addFormParam(form, "commit_message", commitMessage, true);
-        return form;
+        return (form);
     }
 }