Google\Protobuf\Field\Cardinality */ class Field_Cardinality { /** * For fields with unknown cardinality. * * Generated from protobuf enum CARDINALITY_UNKNOWN = 0; */ const CARDINALITY_UNKNOWN = 0; /** * For optional fields. * * Generated from protobuf enum CARDINALITY_OPTIONAL = 1; */ const CARDINALITY_OPTIONAL = 1; /** * For required fields. Proto2 syntax only. * * Generated from protobuf enum CARDINALITY_REQUIRED = 2; */ const CARDINALITY_REQUIRED = 2; /** * For repeated fields. * * Generated from protobuf enum CARDINALITY_REPEATED = 3; */ const CARDINALITY_REPEATED = 3; }