@Override
    public java.util.concurrent.Future<ListRolesResult> listRolesAsync() {

        return listRolesAsync(new ListRolesRequest());
    }
Simplified method form for invoking the ListRoles operation.

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