code: def to_match(self):
          
          self.validate()
  
          mark_name, _ = self.fold_scope_location.get_location_name()
          validate_safe_string(mark_name)
  
          template = u'$%(mark_name)s.size()'
          template_data = {
              'mark_name': mark_name,
          }
          return template % template_data
docs: Return a unicode object with the MATCH representation of this expression.