docs: public <T0, T1, T2, T3, T4, T5> SingleOutputStreamOperator<Tuple6<T0, T1, T2, T3, T4, T5>> projectTuple6() {
  		TypeInformation<?>[] fTypes = extractFieldTypes(fieldIndexes, dataStream.getType());
  		TupleTypeInfo<Tuple6<T0, T1, T2, T3, T4, T5>> tType = new TupleTypeInfo<Tuple6<T0, T1, T2, T3, T4, T5>>(fTypes);
  
  		return dataStream.transform("Projection", tType, new StreamProject<IN, Tuple6<T0, T1, T2, T3, T4, T5>>(fieldIndexes, tType.createSerializer(dataStream.getExecutionConfig())));
  	}