parameters: (self, name, externalID, systemID)
docstring: called when an NOTATION declaration has been found, name is the
             notation name and externalID, systemID are the notation public and
             system identifier for that notation if available
docstring_summary: called when an NOTATION declaration has been found, name is the
             notation name and externalID, systemID are the notation public and
             system identifier for that notation if available
docstring_tokens: called when an NOTATION declaration has been found name is the notation name and externalID systemID are the notation public and system identifier for that notation if available
function: def notationDecl(self, name, externalID, systemID):
          """called when an NOTATION declaration has been found, name is the
             notation name and externalID, systemID are the notation public and
             system identifier for that notation if available"""
          pass
function_tokens: def notationDecl ( self , name , externalID , systemID ) : pass