/// <summary>
/// Method for passing user defined operators along with the type information that will transform the DataStream.
/// </summary>
/// <typeparam name="TOutput">type of the return stream</typeparam>
/// <param name="operatorName">name of the operator, for logging purposes</param>
/// <param name="outTypeInfo">the output type of the operator</param>
/// <param name="operator">the object containing the transformation logic</param>
/// <returns>type of the return stream</returns>
public SingleOutputStreamOperator <TOutput> Transform <TOutput>(
string operatorName,
TypeInformation <TOutput> outTypeInfo,
IOneInputStreamOperator <TElement, TOutput> @operator)
{
var resultTransform = new OneInputTransformation <TElement, TOutput>(Transformation, operatorName, @operator, outTypeInfo, ExecutionEnvironment.Parallelism);
var returnStream = new SingleOutputStreamOperator <TOutput>(ExecutionEnvironment, resultTransform);
ExecutionEnvironment.AddOperator(resultTransform);
return(returnStream);
}