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: resolver.go
    path of file: ./repos/lotus/lib/oldpath/oldresolver
    
    the code of the file until where you have to start completion: package oldresolver

import (
	"context"
	"errors"
	"fmt"
	"time"

	dag "github.com/ipfs/boxo/ipld/merkledag
    
func (r *Resolver) ResolvePath(ctx context.Context, fpath path.Path) (ipld.Node, error) {
	// validate path
	if err := fpath.IsValid(); err != nil {
		return nil, err
	}

	nodes, err := r.ResolvePathComponents(ctx, fpath)
	if err != nil || nodes == nil {
		return nil, err
	}
	return nodes[len(nodes)-1], err
}