docs: def p_class_constant_declaration(p):
      '''class_constant_declaration : class_constant_declaration COMMA STRING EQUALS static_scalar
                                    | CONST STRING EQUALS static_scalar'''
      if len(p) == 6:
          p[0] = p[1] + [ast.ClassConstant(p[3], p[5], lineno=p.lineno(2))]
      else:
          p[0] = [ast.ClassConstant(p[2], p[4], lineno=p.lineno(1))]