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