code: def get_type(self, idx):
          
          _type = self.get_type_ref(idx)
          if _type == -1:
              return "AG:ITI: invalid type"
          return self.get_string(_type)
docs: Return the resolved type name based on the index
  
          This returns the string associated with the type.
  
          :param int idx:
          :return: the type name
          :rtype: str