Character @ in comments are not well transpiled

[manuelalcantara-natgeo]

I have a problem transpiling a schema that contains a @ inside a comment, using version 0.18.1

type Query {
  # @code: Code for foo
  getAccessToken(code: String!): String!
  getLoggedUser(): String!
}

It is transpiled as:

type Query {
  # getAccessToken(code: String!): String!
  getLoggedUser(): String!
}

I do not know if it is a bug or the expected behavior.

Thanks for your help.