Method fail

mypy/semanal.py:7661–7686

(
        self,
        msg: str | ErrorMessage,
        ctx: Context,
        serious: bool = False,
        *,
        code: ErrorCode | None = None,
        blocker: bool = False,
    )

        return True

    def fail(
        self,
        msg: str | ErrorMessage,
        ctx: Context,
        serious: bool = False,
        *,
        code: ErrorCode | None = None,
        blocker: bool = False,
    ) -> None:
        if not serious and not self.in_checked_function():
            return
        # In case it's a bug and we don't really have context
        assert ctx is not None, msg
        if isinstance(msg, ErrorMessage):
            if code is None:
                code = msg.code
            msg = msg.value
        self.errors.report(
            ctx.line,
            ctx.column,
            msg,
            blocker=blocker,
            code=code,
            end_line=ctx.end_line,
            end_column=ctx.end_column,
        )

    def note(self, msg: str, ctx: Context, code: ErrorCode | None = None) -> None:
        if not self.in_checked_function():