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: baked_in.go
    path of file: ./repos/go-gin-example/vendor/gopkg.in/go-playground/validator.v8
    
    the code of the file until where you have to start completion: package validator

import (
	"fmt"
	"net"
	"net/url"
	"reflect"
	"strings"
	"time"
	"unicode/utf8"
)

// BakedInAliasValidators is a default mapping of a single validationstag that
// defines a common or complex set of validation(s) to simplify
// adding validation to structs. i.e. set key "_ageok" and the tags
// are "gt=0,lte=130" or key "_preferredname" and tags "omitempty,gt=
    
func IsTCPAddrResolvable(v *Validate, topStruct reflect.Value, currentStructOrField reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {

	if !isIP4Addr(v, topStruct, currentStructOrField, field, fieldType, fieldKind, param) &&
		!isIP6Addr(v, topStruct, currentStructOrField, field, fieldType, fieldKind, param) {
		return false
	}

	_, err := net.ResolveTCPAddr("tcp", field.String())
	return err == nil
}