```typescript
default function ExplainApi<TDocument = unknown>(this: [That](./That.md), params: [ExplainRequest](./ExplainRequest.md), options?: [TransportRequestOptionsWithMeta](./TransportRequestOptionsWithMeta.md)): Promise<[TransportResult](./TransportResult.md)<[ExplainResponse](./ExplainResponse.md)<TDocument>, unknown>>;
```