func (l *openMetricsLexer) buf() []byte {
	return l.b[l.start:l.i]
}
func (l *openMetricsLexer) buf() []byte {
	return l.b[l.start:l.i]
}
func ( l * openMetricsLexer ) buf ( ) [ ] byte { return l . b [ l . start : l . i ] }
// buf returns the buffer of the current token.
buf returns the buffer of the current token .