code: @Override
      public ModifySubnetAttributeResult modifySubnetAttribute(ModifySubnetAttributeRequest request) {
          request = beforeClientExecution(request);
          return executeModifySubnetAttribute(request);
      }
docs: <p>
  Modifies a subnet attribute. You can only modify one attribute at a time.
  </p>
  
  @param modifySubnetAttributeRequest
  @return Result of the ModifySubnetAttribute operation returned by the service.
  @sample AmazonEC2.ModifySubnetAttribute
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/ModifySubnetAttribute" target="_top">AWS API
  Documentation</a>