Deprecated.- Vocabulary Sources hosts large number of concept information. This method retrieves all the concepts from a Source. If all the concepts were not returned prior a time limit specified on the server this method tends to die.
Gets narrower MetaThesaurus concepts for the specified concept from a given source
The relationship between these concepts are of type "RN" (Related Narrower)
Extracts an edit action string (for example, 'CREATE') from a
edit action constance string (form example, 'EDIT_ACTION_CREATE_STR') corresponding
to the specified edit action code.
Returns an array containing the individual white-space delimited words
contained by the given string, removing stop words and normalizing to
lower case.