code: def to_match(self):
          
          self.validate()
  
          mark_name, field_name = self.location.get_location_name()
          validate_safe_string(mark_name)
          validate_safe_string(field_name)
  
          return u'%s.%s' % (mark_name, field_name)
docs: Return a unicode object with the MATCH representation of this GlobalContextField.