API Reference > imodeljs-clients > iTwinServiceClients > WsgClient > postInstance postInstance MethodProtected Used by clients to post strongly typed instances through standard WSG REST API postInstance<T extends WsgInstance>(requestContext: AuthorizedClientRequestContext, typedConstructor: { T }, relativeUrlPath: string, instance: T extends WsgInstance, requestOptions?: WsgRequestOptions): Promise<T extends WsgInstance> Parameter Type Description requestContext AuthorizedClientRequestContext The client request context typedConstructor { T } Used by clients to post a strongly typed instance through the REST API that's expected to return a standard response. relativeUrlPath string Relative path to the REST resource. instance T extends WsgInstance Strongly typed instance to be posted. requestOptions WsgRequestOptions WSG options for the request. Returns - Promise<T extends WsgInstance> The posted instance that's returned back from the server. Defined in core/clients/src/WsgClient.ts Line 300 Last Updated: 13 June, 2024