add kdoc

Signed-off-by: parneet-guraya <gurayaparneet@gmail.com>

app/src/main/java/fr/free/nrw/commons/contributions/ContributionBoundaryCallback.kt

@@ -47,6 +47,12 @@ class ContributionBoundaryCallback
             fetchContributions()
         }
 
+        /**
+         * Fetch list from network and save it to local DB.
+         *
+         * @param onRefreshFinish callback to invoke when operations finishes
+         * with either error or success.
+         */
         fun refreshList(onRefreshFinish: () -> Unit = {}){
             if (sessionManager.userName != null) {
                 mediaClient.resetUserNameContinuation(sessionManager.userName!!)
@@ -56,6 +62,9 @@ class ContributionBoundaryCallback
 
         /**
          * Fetches contributions using the MediaWiki API
+         *
+         *   @param onRefreshFinish callback to invoke when operations finishes
+         *   with either error or success.
          */
         private fun fetchContributions(onRefreshFinish: () -> Unit = {}) {
             if (sessionManager.userName != null) {
@@ -89,6 +98,8 @@ class ContributionBoundaryCallback
 
         /**
          * Saves the contributions the the local DB
+         *
+         * @param onRefreshFinish callback to invoke when successfully saved to DB.
          */
         private fun saveContributionsToDB(contributions: List<Contribution>, onRefreshFinish: () -> Unit) {
             compositeDisposable.add(

app/src/main/java/fr/free/nrw/commons/contributions/ContributionsListContract.java

@@ -20,5 +20,6 @@ public class ContributionsListContract {
     public interface UserActionListener extends BasePresenter<View> {
 
         void refreshList(SwipeRefreshLayout swipeRefreshLayout);
+
     }
 }

app/src/main/java/fr/free/nrw/commons/contributions/ContributionsListPresenter.java

@@ -96,8 +96,14 @@ public class ContributionsListPresenter implements UserActionListener {
         contributionBoundaryCallback.dispose();
     }
 
+    /**
+     * It is used to refresh list.
+     *
+     * @param swipeRefreshLayout used to stop refresh animation when
+     * refresh finishes.
+     */
     @Override
-    public void refreshList(SwipeRefreshLayout swipeRefreshLayout) {
+    public void refreshList(final SwipeRefreshLayout swipeRefreshLayout) {
         contributionBoundaryCallback.refreshList(() -> {
             swipeRefreshLayout.setRefreshing(false);
             return Unit.INSTANCE;

app/src/main/res/layout/fragment_contributions_list.xml

@@ -125,5 +125,5 @@
     </LinearLayout>
 
   </RelativeLayout>
-</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 
+</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>