You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: evaluation.pb.gw.go
    path of file: ./repos/flipt/rpc/flipt/evaluation
    
    the code of the file until where you have to start completion: // Code generated by protoc-gen-grpc-gateway. DO NOT EDIT.
// source: evaluation/evaluation.proto

/*
Package evaluation is a reverse proxy.

It translates gRPC into RESTful JSON APIs.
*/
package evaluation

import (
	"context"
	"io"
	"net/http"

	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
	"github.com/grpc-ecosystem/grpc-gateway/v2/utilities"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/grpclog"
	"google.golan
    
func request_EvaluationService_Batch_0(ctx context.Context, marshaler runtime.Marshaler, client EvaluationServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
	var protoReq BatchEvaluationRequest
	var metadata runtime.ServerMetadata

	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && err != io.EOF {
		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
	}

	msg, err := client.Batch(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
	return msg, metadata, err

}