code: public <F> ConnectedIterativeStreams<T, F> withFeedbackType(TypeHint<F> feedbackTypeHint) {
  		return withFeedbackType(TypeInformation.of(feedbackTypeHint));
  	}
docs: Changes the feedback type of the iteration and allows the user to apply
  co-transformations on the input and feedback stream, as in a
  {@link ConnectedStreams}.
  
  <p>For type safety the user needs to define the feedback type
  
  @param feedbackTypeHint
  Class of the elements in the feedback stream.
  @return A {@link ConnectedIterativeStreams}.