code: @Override
      public DescribeVpcEndpointServicePermissionsResult describeVpcEndpointServicePermissions(DescribeVpcEndpointServicePermissionsRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeVpcEndpointServicePermissions(request);
      }
docs: <p>
  Describes the principals (service consumers) that are permitted to discover your VPC endpoint service.
  </p>
  
  @param describeVpcEndpointServicePermissionsRequest
  @return Result of the DescribeVpcEndpointServicePermissions operation returned by the service.
  @sample AmazonEC2.DescribeVpcEndpointServicePermissions
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/DescribeVpcEndpointServicePermissions"
  target="_top">AWS API Documentation</a>