func (m Map) MustJSON() string {
	result, err := m.JSON()
	if err != nil {
		panic(err.Error())
	}
	return result
}
MustJSON converts the contained object to a JSON string
representation and panics if there is an error
package objx
import (
	"bytes"
	"encoding/base64"
	"encoding/json"
	"errors"
	"fmt"
	"net/url"
)
func (m Map) JSON() (string, error) {
	result, err := json.Marshal(m)
	if err != nil {
		err = errors.New("objx: JSON encode failed with: " + err.Error())
	}
	return string(result), err
}