@Override
    public java.util.concurrent.Future<ListUsersResult> listUsersAsync() {

        return listUsersAsync(new ListUsersRequest());
    }
Simplified method form for invoking the ListUsers operation.

@see #listUsersAsync(ListUsersRequest)
aws-java-sdk-iam/src/main/java/com/amazonaws/services/identitymanagement/AmazonIdentityManagementAsyncClient.java