I'd like to implement a custom static method in a directive so I can easily implement and shared the intended functionality of it.

It currently errors on runtime with the following erro: ERROR:strawberry.execution:'StrawberrySchemaDirective' object has no attribute 'get_token'

@strawberry.schema_directive(locations=[Location.FIELD_DEFINITION])
class UnitSensitive:   

    @staticmethod
    def get_token(request: fastapi.Request) -> str:
        token: str = request.headers.get("sensitive_token")

        if not token:
            raise HTTPException(
                status_code=HTTPStatus.UNAUTHORIZED,
                detail="Sensitive Token required",
            )

        return token

Example usage:

token = directives.Sensitive.get_token(info.context.request)