expected identifier, found keyword Error in derive(Interface) with field(name = "type",..)

[tacogips]

I have a schema with interface which has field name type.

enum UserType {
  Free
  Payed
}

interface User {
  id: ID!
  type: UserType
}

type Me implements User {
  id: ID!
  type: UserType
  email: String
}

and the rust definition would be as below.

#[derive(Enum, Copy, Clone, Debug, Eq, PartialEq)]
pub enum UserType {
    Free,
    Payed,
}

#[derive(Interface)]
#[graphql(
    field(name = "id", type = "ID"),
    field(name = "type", type = "Option <UserType>")
)]
#[derive(Debug, Clone)]
pub enum User {
    Friend(Friend),
    Me(Me),
}

#[derive(Debug, Clone)]
pub struct Me {
    pub id: ID,
    pub email: Option<String>,
}

#[Object]
impl Me {
    pub async fn id(&self) -> ID {
        self.id.clone()
    }
    pub async fn r#type(&self, ctx: &Context<'_>) -> Result<Option<UserType>> {
        unimplemented!()
    }
    pub async fn email(&self) -> Option<String> {
        self.email.clone()
    }
}

Then I got a error in the derive macro.

error: expected identifier, found keyword `type`
 --> examples/some/main.rs:8:10
  |
8 | #[derive(Interface)]
  |          ^^^^^^^^^ expected identifier, found keyword
  |
  = note: this error originates in the derive macro `Interface` (in Nightly builds, run with -Z macro-backtrace for more info)
help: escape `type` to use it as an identifier

I'd say it caused by calling method which name is same as rust keyword like self.type() in the token stream.

changing the field name to r#type didn't solve it.

 field(name = "r#type", type = "Option <UserType>")
...
8 | #[derive(Interface)]
  |          ^^^^^^^^^
  |
  = help: message: `"r#type"` is not a valid identifier

Is there anyway to workaround this issue?

versions

async-graphql:4.0.15

[sunli829]

Fixed in master branch 🙂