Add functionality to get active rules for a branch (#1897)

* Add functionality to get active rules for a branch

* Add javadoc to enums

* Add javadoc to constants

* Fix javadoc warnings

* Add tests to cover model classes

* Add class javadoc

* Cover missing parts

* Update src/main/java/org/kohsuke/github/GHRepositoryRule.java

Co-authored-by: Liam Newman <bitwiseman@gmail.com>

* Apply suggestions

* Add unknown to enums

* Apply requested changes

* Fix javadoc

* Fix javadoc

* Configure type for objectreader

* Ignore spotbugs warnings

* Cover enums

---------

Co-authored-by: Liam Newman <bitwiseman@gmail.com>

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

@@ -1007,7 +1007,7 @@ public PagedIterable<GHUser> listCollaborators(CollaboratorAffiliation affiliati
 
     /**
      * Lists all
-     * <a href="https://help.github.com/articles/assigning-issues-and-pull-requests-to-other-github-users/">the
+     * <a href= "https://help.github.com/articles/assigning-issues-and-pull-requests-to-other-github-users/">the
      * available assignees</a> to which issues may be assigned.
      *
      * @return the paged iterable
@@ -2222,7 +2222,7 @@ public GHCommitStatus getLastCommitStatus(String sha1) throws IOException {
      * @return check runs for given ref
      * @throws IOException
      *             the io exception
-     * @see <a href="https://developer.github.com/v3/checks/runs/#list-check-runs-for-a-specific-ref">List check runs
+     * @see <a href= "https://developer.github.com/v3/checks/runs/#list-check-runs-for-a-specific-ref">List check runs
      *      for a specific ref</a>
      */
     public PagedIterable<GHCheckRun> getCheckRuns(String ref) throws IOException {
@@ -2242,7 +2242,7 @@ public PagedIterable<GHCheckRun> getCheckRuns(String ref) throws IOException {
      * @return check runs for the given ref
      * @throws IOException
      *             the io exception
-     * @see <a href="https://developer.github.com/v3/checks/runs/#list-check-runs-for-a-specific-ref">List check runs
+     * @see <a href= "https://developer.github.com/v3/checks/runs/#list-check-runs-for-a-specific-ref">List check runs
      *      for a specific ref</a>
      */
     public PagedIterable<GHCheckRun> getCheckRuns(String ref, Map<String, Object> params) throws IOException {
@@ -3568,7 +3568,8 @@ void populate() throws IOException {
 
         // We don't use the URL provided in the JSON because it is not reliable:
         // 1. There is bug in Push event payloads that returns the wrong url.
-        // For Push event repository records, they take the form "https://github.com/{fullName}".
+        // For Push event repository records, they take the form
+        // "https://github.com/{fullName}".
         // All other occurrences of "url" take the form "https://api.github.com/...".
         // 2. For Installation event payloads, the URL is not provided at all.
 
@@ -3649,6 +3650,23 @@ public List<GHRepositoryTrafficTopReferralSources> getTopReferralSources() throw
                 .fetch(GHRepositoryTrafficTopReferralSources[].class));
     }
 
+    /**
+     * Get all active rules that apply to the specified branch
+     * (https://docs.github.com/en/rest/repos/rules?apiVersion=2022-11-28#get-rules-for-a-branch).
+     *
+     * @param branch
+     *            the branch
+     * @return the rules for branch
+     * @throws IOException
+     *             the io exception
+     */
+    public PagedIterable<GHRepositoryRule> listRulesForBranch(String branch) throws IOException {
+        return root().createRequest()
+                .method("GET")
+                .withUrlPath(getApiTailUrl("/rules/branches/" + branch))
+                .toIterable(GHRepositoryRule[].class, null);
+    }
+
     /**
      * A {@link GHRepositoryBuilder} that allows multiple properties to be updated per request.
      *