Added access Enum

src/main/java/org/gitlab/api/GitlabAPI.java

@@ -145,7 +145,7 @@ public class GitlabAPI {
      *
      * @return The GitLab Group
      */
-    public GitlabGroup createGroup(String name, String path, String ldapCn, Integer ldapAccess) throws IOException {
+    public GitlabGroup createGroup(String name, String path, String ldapCn, GitlabAccessLevel ldapAccess) throws IOException {
 
         Query query = new Query()
                 .append("name", name)

src/main/java/org/gitlab/api/http/Query.java

 package org.gitlab.api.http;
 
+import org.gitlab.api.models.GitlabAccessLevel;
+
 import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
 import java.util.ArrayList;
@@ -87,6 +89,22 @@ public class Query {
         return this;
     }
 
+    /**
+     * Conditionally append a parameter to the query
+     * if the value of the parameter is not null
+     *
+     * @param name Parameter name
+     * @param value Parameter value
+     *
+     * @throws java.io.UnsupportedEncodingException If the provided value cannot be URL Encoded
+     */
+    public Query appendIf(final String name, final GitlabAccessLevel value) throws UnsupportedEncodingException {
+        if(value != null) {
+            append(name, Integer.toString(value.accessValue));
+        }
+        return this;
+    }
+
     /**
      * Returns a Query suitable for appending
      * to a URI

src/main/java/org/gitlab/api/models/GitlabAccessLevel.java

+package org.gitlab.api.models;
+
+
+public enum GitlabAccessLevel {
+    Guest(10),
+    Reporter(20),
+    Developer(30),
+    Master(40),
+    Owner(50);
+
+    public final int accessValue;
+    GitlabAccessLevel(int accessValue) {
+        this.accessValue = accessValue;
+    }
+
+    public static GitlabAccessLevel fromAccessValue(final int accessValue) throws IllegalArgumentException {
+        for(final GitlabAccessLevel gitlabAccessLevel : GitlabAccessLevel.values()) {
+            if(gitlabAccessLevel.accessValue == accessValue) {
+                return gitlabAccessLevel;
+            }
+        }
+        throw new IllegalArgumentException("No GitLab Access Level enum constant with access value: " + accessValue);
+    }
+}
\ No newline at end of file

src/main/java/org/gitlab/api/models/GitlabGroup.java

@@ -48,11 +48,11 @@ public class GitlabGroup {
         this._ldapCn = ldapCn;
     }
 
-    public Integer getLdapAccess() {
-        return _ldapAccess;
+    public GitlabAccessLevel getLdapAccess() {
+        return GitlabAccessLevel.fromAccessValue(_ldapAccess);
     }
 
-    public void setLdapAccess(Integer ldapAccess) {
-        this._ldapAccess = ldapAccess;
+    public void setLdapAccess(GitlabAccessLevel ldapGitlabAccessLevel) {
+        this._ldapAccess = ldapGitlabAccessLevel.accessValue;
     }
 }