a synopsis element that is optional
Method to yield an optional String according as whether this Element is an operand.
Method to yield an optional String according as whether this Element is an operand.
optionally the value of this Operand element (includes optional elements); None if this Element is not an operand.
Method to compare this Element with that Element.
Method to compare this Element with that Element.
the comparand.
the result of invoking value compare that.value
a synopsis element that is optional
Method to determine if this Element is optional.
Method to determine if this Element is optional.
true if this Element is optional.
Method to yield the value (name) of this Element
Method to yield the value (name) of this Element
the value/name
This represents an optional synopsis element, either an optional flag, or an optional value.
a synopsis element that is optional