nl_tokens: 3 . 1 . 2 . 1 OrdinaryHasOwnMetadata ( MetadataKey O P ) https : // rbuckton . github . io / reflect - metadata / #ordinaryhasownmetadata
pl_tokens: function OrdinaryHasOwnMetadata ( MetadataKey , O , P ) { var metadataMap = GetOrCreateMetadataMap ( O , P , /*Create*/ false ) ; if ( IsUndefined ( metadataMap ) ) return <mask> ; return ToBoolean ( metadataMap . has ( MetadataKey ) ) ; }