@Override
    public java.util.concurrent.Future<DescribeDomainControllersResult> describeDomainControllersAsync(DescribeDomainControllersRequest request) {

        return describeDomainControllersAsync(request, null);
    }
Simplified method form for invoking the DescribeDirectories operation with an AsyncHandler.

@see #describeDirectoriesAsync(DescribeDirectoriesRequest, com.amazonaws.handlers.AsyncHandler)
aws-java-sdk-directory/src/main/java/com/amazonaws/services/directory/AWSDirectoryServiceAsyncClient.java