difference method
Implementation
@override
EnumSet<FollowValue> difference(EnumSet<FollowValue> other) =>
FollowValueEnumSet.fromRawValue(this.rawValue & ~other.rawValue);
@override
EnumSet<FollowValue> difference(EnumSet<FollowValue> other) =>
FollowValueEnumSet.fromRawValue(this.rawValue & ~other.rawValue);