trait SpecIntoSelfProfilingString: Debug {
    // Required method
    fn spec_to_self_profile_string(
        &self,
        builder: &mut QueryKeyStringBuilder<'_, '_>,
    ) -> StringId;
}trait SpecIntoSelfProfilingString: Debug {
    // Required method
    fn spec_to_self_profile_string(
        &self,
        builder: &mut QueryKeyStringBuilder<'_, '_>,
    ) -> StringId;
}