code: def is_not_none(self, a, message=None):
          "Check if a value is not None"
          if a is None:
              self.log_error("{} is None".format(str(a)), message)
              return False
          return Truf is_not_none(self, a, message=None):
          "Check if a value is not None"
          if a is None:
              self.log_error("{} is None".format(str(a)), message)
              return False
          return True
docs: Check if a value is not None