code: public void modifyInstanceAttributes(String name, String vpcId) {
          ModifyVpcAttributesRequest request = new ModifyVpcAttributesRequest();
          modifyInstanceAttributes(request.withName(name).withVpcId(vpcId));
      }
docs: Modifying the special attribute to new value of the vpc owned by the user.
  @param name The name of the vpc after modifying
  @param vpcId the id of the vpc