method PromiseVariableApi.prototype.listVariableimport { PromiseVariableApi } from "https://deno.land/x/windmill@v1.28.1/windmill-api/types/PromiseAPI.ts"; listVariable(workspace: string, _options?: Configuration): Promise<Array<ListableVariable>>list variables Parametersworkspace: stringoptional_options: ConfigurationReturnsPromise<Array<ListableVariable>>