Direction: d=DirectionE;
enum DirectionE: BACKWARDS = 'backward' | FORWARDS = 'forward';
Operator: d=OperatorE;
enum OperatorE: AND = 'and' | OR = 'or';
Direction: d=DirectionE;
enum DirectionE: BACKWARDS = 'backward' | FORWARDS = 'forward';
Operator: d=OperatorE;
enum OperatorE: AND = 'and' | OR = 'or';