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: fieldspec.go
    path of file: ./repos/kubeedge/vendor/sigs.k8s.io/kustomize/api/filters/fieldspec
    
    the code of the file until where you have to start completion: // Copyright 2019 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0

package fieldspec

import (
	"fmt"
	"strings"

	"sigs.k8s.io/kustomize/api/filters/filtersutil"
	"sigs.k8s.io/kustomize/api/types"
	"sigs.k8s.io/kustomize/kyaml/errors"
	"sigs.k8s.io/kustomize/kyaml/resid"
	"s
    
func (fltr Filter) Filter(obj *yaml.RNode) (*yaml.RNode, error) {
	// check if the FieldSpec applies to the object
	if match := isMatchGVK(fltr.FieldSpec, obj); !match {
		return obj, nil
	}
	fltr.path = utils.PathSplitter(fltr.FieldSpec.Path, "/")
	if err := fltr.filter(obj); err != nil {
		return nil, errors.WrapPrefixf(err,
			"considering field '%s' of object %s", fltr.FieldSpec.Path, resid.FromRNode(obj))
	}
	return obj, nil
}