parameters: (self)
return_statement: return self.ufvx[3]
docstring: Calls get_all routine of forcefield to update potential.
  
        Returns:
           A string containing all formatted additional output that the
           client might have produced.
docstring_summary: Calls get_all routine of forcefield to update potential.
docstring_tokens: Calls get_all routine of forcefield to update potential .
function: def get_extra(self):
        """Calls get_all routine of forcefield to update potential.
  
        Returns:
           A string containing all formatted additional output that the
           client might have produced.
        """
  
        return self.ufvx[3]
function_tokens: def get_extra ( self ) : return self . ufvx [ 3 ]