code: def p_valueofSimpleSyntax(self, p):
          
          # libsmi for objectIdentifier_defval:
          # This is only for some MIBs with invalid numerical
          # OID notation for DEFVALs. We DO NOT parse them
          # correctly. We just don't want to produce a
          # parser error.
          n = len(p)
          if n == 2:
              p[0] = p[1]
          elif n == 4:  # XXX
              pass
docs: valueofSimpleSyntax : NUMBER
                                 | NEGATIVENUMBER
                                 | NUMBER64
                                 | NEGATIVENUMBER64
                                 | HEX_STRING
                                 | BIN_STRING
                                 | LOWERCASE_IDENTIFIER
                                 | QUOTED_STRING
                                 | '{' objectIdentifier_defval '}