[youtubei.js](../../../README.md) / [Generator](../README.md) / introspect # Function: introspect() > **introspect**(`classdata`): `object` Introspect an example of a class in order to determine its key info and dependencies ## Parameters • **classdata**: `unknown` The example of the class ## Returns `object` The key info and any unimplemented dependencies ### key\_info > **key\_info**: readonly [`string`, [`InferenceType`](../type-aliases/InferenceType.md)][] ### unimplemented\_dependencies > **unimplemented\_dependencies**: [`string`, `any`][] ## Defined in [src/parser/generator.ts:376](https://github.com/LuanRT/YouTube.js/blob/fc5571629eca037af7de03f4b903da6add1f300b/src/parser/generator.ts#L376)