feat: Add auto_merge field to the PR class

Author: Abhi347

src/main/java/com/spotify/github/v3/prs/AutoMerge.java

@@ -0,0 +1,49 @@
+/*-
+ * -\-\-
+ * github-api
+ * --
+ * Copyright (C) 2016 - 2020 Spotify AB
+ * --
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * -/-/-
+ */
+
+package com.spotify.github.v3.prs;
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.spotify.github.GithubStyle;
+import com.spotify.github.v3.User;
+import org.immutables.value.Value;
+
+import javax.annotation.Nullable;
+
+@Value.Immutable
+@GithubStyle
+@JsonSerialize(as = ImmutableAutoMerge.class)
+@JsonDeserialize(as = ImmutableAutoMerge.class)
+public interface AutoMerge {
+  // Who enabled the auto merge
+  User enabledBy();
+
+  // Merge Method chosen for the auto merge
+  String mergeMethod();
+
+  // The commit title to use when merging the pull request
+  @Nullable
+  String commitTitle();
+
+  // The commit message to use when merging the pull request
+  @Nullable
+  String commitMessage();
+}

src/main/java/com/spotify/github/v3/prs/PullRequest.java

@@ -7,9 +7,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -87,4 +87,7 @@ public interface PullRequest extends PullRequestItem {
 
   @Nullable
   List<Label> labels();
+
+  @Nullable
+  AutoMerge autoMerge();
 }