type golang.org/x/xerrors.Formatter

4 uses

	golang.org/x/xerrors (current package)
		adaptor.go#L17: func FormatError(f Formatter, s fmt.State, verb rune) {
		adaptor.go#L74: 		case Formatter:
		format.go#L8: type Formatter interface {
		wrap.go#L29: 	if f, ok := e.error.(Formatter); ok {

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