API Reference > ecSchema-Metadata > Metadata > Schema > lookupItemSync lookupItemSync Method Attempts to find a schema item within this schema or a (directly) referenced schema lookupItemSync<T extends SchemaItem<T>>(key: string | Readonly<SchemaItemKey>): undefined | T Parameter Type Description key string | Readonly<SchemaItemKey> The full name or a SchemaItemKey identifying the desired item. Returns - undefined | T Defined in core/ecschema-metadata/src/Metadata/Schema.ts Line 418 Last Updated: 12 June, 2024