code: public ApiResponse<List<Object>> initializePostWithHttpInfo(InitializeRequest request) throws ApiException {
          com.squareup.okhttp.Call call = initializePostValidateBeforeCall(request, null, null);
          Type localVarReturnType = new TypeToken<List<Object>>(){}.getType();
          return apiClient.execute(call, localVarReturnType);
      }
docs: Initialize Managed Entity&#39;s relationship by attribute name
  Hydrate relationship associated to that entity.
  @param request Initilize Relationship Request (required)
  @return ApiResponse&lt;List&lt;Object&gt;&gt;
  @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body