Adds javadoc and a changelog entry

Signed-off-by: Darshit Chanpura <dchanp@amazon.com>

Author: DarshitChanpura

CHANGELOG.md

@@ -5,6 +5,8 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.1.0/)
 
 ## [Unreleased 3.3](https://github.com/opensearch-project/flow-framework/compare/3.2...HEAD)
 ### Features
+- Onboards flow-framework plugin to resource-sharing and access control framework ([#1251](https://github.com/opensearch-project/flow-framework/pull/1251))
+
 ### Enhancements
 ### Bug Fixes
 - Pre-create ML Commons indices for Tenant Aware tests ([#1217](https://github.com/opensearch-project/flow-framework/pull/1217))

src/main/java/org/opensearch/flowframework/util/ParseUtils.java

@@ -252,6 +252,11 @@ public static User getUserContext(Client client) {
         return User.parse(userStr);
     }
 
+    /**
+     * Checks whether resource authz framework should be used.
+     * @param resourceType the type to check for resource authz
+     * @return true if resource-authz should be used, false otherwise
+     */
     public static boolean shouldUseResourceAuthz(String resourceType) {
         var client = ResourceSharingClientAccessor.getInstance().getResourceSharingClient();
         return client != null && client.isFeatureEnabledForType(resourceType);