onlyone property
Implementation
static final onlyone = $pb.Extension<$core.bool>(const $core.bool.fromEnvironment('protobuf.omit_message_names') ? '' : 'google.protobuf.MessageOptions', const $core.bool.fromEnvironment('protobuf.omit_field_names') ? '' : 'onlyone', 64009, $pb.PbFieldType.OB);