openapi-generator-original/modules/swagger-codegen/src/main/resources/objc/apiNonPrimitiveResponse.mustache

    {{^returnTypeIsPrimitive}}
    // comples response type
    return [self.apiClient dictionary: requestUrl
                       method: @"{{httpMethod}}"
                  queryParams: queryParams
                         body: bodyDictionary
                 headerParams: headerParams
                 authSettings: authSettings
           requestContentType: requestContentType
          responseContentType: responseContentType
              completionBlock: ^(NSDictionary *data, NSError *error) {
                if (error) {
                    {{#returnBaseType}}completionBlock(nil, error);{{/returnBaseType}}
                    {{^returnBaseType}}completionBlock(error);{{/returnBaseType}}
                    return;
                }
                {{#returnType}}{{returnType}} result = nil;
                if (data) {
                    result = [[{{#instantiationType}}NSClassFromString(@"{{{instantiationType}}}") {{/instantiationType}}{{^instantiationType}}{{{returnBaseType}}} {{/instantiationType}} alloc] {{#returnContainer}}{{#isMapContainer}}initWithDictionary{{/isMapContainer}}{{#isListContainer}} initWithDictionary{{/isListContainer}}{{/returnContainer}}{{^returnContainer}} initWithDictionary{{/returnContainer}}:data error:nil];
                }
                {{#returnType}}completionBlock(result , nil);{{/returnType}}
                {{/returnType}}
              }];
    {{/returnTypeIsPrimitive}}