func (ld Loader) PrintHelp(cfg interface{}) {
	w := bufio.NewWriter(os.Stderr)
	ld.fprintHelp(w, cfg, stderr())
	w.Flush()
}
PrintHelp outputs the help message for cfg to stderr.
package conf
import (
	"bufio"
	"flag"
	"fmt"
	"io"
	"os"
	"reflect"
	"strings"
	"github.com/segmentio/objconv"
)
func (ld Loader) PrintError(err error) {
	w := bufio.NewWriter(os.Stderr)
	ld.fprintError(w, err, stderr())
	w.Flush()
}
func (ld Loader) FprintError(w io.Writer, err error) {
	ld.fprintError(w, err, monochrome())
}