parameters: (self)
return_statement: return self._value
docstring: The value of this dimension, or None if it is unknown.
docstring_summary: The value of this dimension, or None if it is unknown.
docstring_tokens: The value of this dimension or None if it is unknown .
function: def value(self):
      """The value of this dimension, or None if it is unknown."""
      return self._value
function_tokens: def value ( self ) : return self . _value