code: public DocServiceBuilder exampleRequestForMethod(String serviceName, String methodName,
                                                       Iterable<?> exampleRequests) {
          requireNonNull(serviceName, "serviceName");
          requireNonNull(methodName, "methodName");
          requireNonNull(exampleRequests, "exampleRequests");
  
          for (Object e : exampleRequests) {
              requireNonNull(e, "exampleRequests contains null.");
              exampleRequest0(serviceName, methodName,
                              serializeExampleRequest(serviceName, methodName, e));
          }
          return this;
      }
docs: Adds the example requests for the method with the specified service and method name.