@Override
    public java.util.concurrent.Future<ModifyInstanceGroupsResult> modifyInstanceGroupsAsync() {

        return modifyInstanceGroupsAsync(new ModifyInstanceGroupsRequest());
    }
Simplified method form for invoking the ModifyInstanceGroups operation.

@see #modifyInstanceGroupsAsync(ModifyInstanceGroupsRequest)
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/AbstractAmazonElasticMapReduceAsync.java