code: def content_type(self):
          
          value = ""
          lst = self._attributes.get("ct")
          if lst is not None and len(lst) > 0:
              value = "ct="
              for v in lst:
                  value += str(v) + " "
          if len(value) > 0:
              value = value[:-1]
          return value
docs: Get the CoRE Link Format ct attribute of the resource.
  
          :return: the CoRE Link Format ct attribute