code: def p_casecontent_statement_default(self, p):
          'casecontent_statement : DEFAULT COLON basic_statement'
          p[0] = Case(None, p[3], lineno=p.lineno(1))
          p.set_lineno(0, p.lineno(1)f p_casecontent_statement_default(self, p):
          'casecontent_statement : DEFAULT COLON basic_statement'
          p[0] = Case(None, p[3], lineno=p.lineno(1))
          p.set_lineno(0, p.lineno(1))
docs: casecontent_statement : DEFAULT COLON basic_statement