code: def is_converged(self):
          '''Whether the calculation has converged
          
          Returns: Property where "scalar" is a boolean indicating
          '''
  
          # Check for cached result
          if self._converged is None:
              self._converged = self._is_converged()
          return Property(scalars=[Scalar(value=self._converged)]f is_converged(self):
          '''Whether the calculation has converged
          
          Returns: Property where "scalar" is a boolean indicating
          '''
  
          # Check for cached result
          if self._converged is None:
              self._converged = self._is_converged()
          return Property(scalars=[Scalar(value=self._converged)])
docs: Whether the calculation has converged
          
          Returns: Property where "scalar" is a boolean indicating