Add parameter to listContributors for anonymous contributors

src/main/java/org/kohsuke/github/GHRepository.java

@@ -3080,6 +3080,26 @@ public PagedIterable<Contributor> listContributors() throws IOException {
         return root().createRequest().withUrlPath(getApiTailUrl("contributors")).toIterable(Contributor[].class, null);
     }
 
+    /**
+     * List contributors paged iterable.
+     *
+     * @param includeAnonymous
+     *            whether to include anonymous contributors
+     * @return the paged iterable
+     * @throws IOException
+     *             the io exception
+     * @link https://docs.github.com/en/rest/repos/repos?apiVersion=2022-11-28#list-repository-contributors
+     */
+    public PagedIterable<Contributor> listContributors(boolean includeAnonymous) throws IOException {
+        if (includeAnonymous) {
+            return root().createRequest()
+                    .withUrlPath(getApiTailUrl("contributors"))
+                    .with("anon", "true")
+                    .toIterable(Contributor[].class, null);
+        }
+        return listContributors();
+    }
+
     /**
      * The type Contributor.
      */

src/test/java/org/kohsuke/github/GHRepositoryTest.java

@@ -501,6 +501,30 @@ public void listContributors() throws IOException {
         assertThat(kohsuke, is(true));
     }
 
+    /**
+     * List contributors.
+     *
+     * @throws IOException
+     *             Signals that an I/O exception has occurred.
+     */
+    @Test
+    public void listContributorsAnon() throws IOException {
+        GHRepository r = gitHub.getOrganization("hub4j").getRepository("github-api");
+        int i = 0;
+        boolean kohsuke = false;
+
+        for (GHRepository.Contributor c : r.listContributors(true)) {
+            if (c.getLogin().equals("kohsuke")) {
+                assertThat(c.getContributions(), greaterThan(0));
+                kohsuke = true;
+            }
+            if (i++ > 5) {
+                break;
+            }
+        }
+
+        assertThat(kohsuke, is(true));
+    }
     /**
      * Gets the permission.
      *