code: def p_delays(self, p):
          'delays : DELAY LPAREN expression RPAREN'
          p[0] = DelayStatement(p[3], lineno=p.lineno(1))
          p.set_lineno(0, p.lineno(1)f p_delays(self, p):
          'delays : DELAY LPAREN expression RPAREN'
          p[0] = DelayStatement(p[3], lineno=p.lineno(1))
          p.set_lineno(0, p.lineno(1))
docs: delays : DELAY LPAREN expression RPAREN