@Override
    public java.util.concurrent.Future<ListGroupsResult> listGroupsAsync(com.amazonaws.handlers.AsyncHandler<ListGroupsRequest, ListGroupsResult> asyncHandler) {

        return listGroupsAsync(new ListGroupsRequest(), asyncHandler);
    }
Simplified method form for invoking the ListGroups operation with an AsyncHandler.

@see #listGroupsAsync(ListGroupsRequest, com.amazonaws.handlers.AsyncHandler)
aws-java-sdk-iam/src/main/java/com/amazonaws/services/identitymanagement/AmazonIdentityManagementAsyncClient.java