Add a get_all_list_data utility function that uses a get_next generator ...

...function to retrieve all json data for methods that return a list and support pagination.  Include tests and function doc.
The "next" function is a "built-in" for getting the next item of an iterator/generator.  From the docs:

"Retrieve the next item from the iterator by calling its next() method. If default is given, it is returned if the iterator is exhausted, otherwise StopIteration is raised."