docs: add javadoc for new protected getAdditionalHeaders()

googleapis · Nov 30, 2020 · 8f6b1fc · 8f6b1fc
1 parent 8665dfd
commit 8f6b1fc
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/oauth2_http/java/com/google/auth/oauth2/OAuth2Credentials.java b/oauth2_http/java/com/google/auth/oauth2/OAuth2Credentials.java
@@ -167,6 +167,11 @@ public void refresh() throws IOException {
     }
   }
 
+  /**
+   * Provide additional headers to return as request metadata.
+   *
+   * @return Map of additional headers.
+   */
   protected Map<String, List<String>> getAdditionalHeaders() {
     return EMPTY_EXTRA_HEADERS;
   }