Function apply_state_machine_kerning 

fn apply_state_machine_kerning<T, E, Driver: StateTableDriver<T, E>>(
    c: &mut AatApplyContext<'_>,
    subtable: &Subtable<'_>,
    kind: &T,
    state_table: &ExtendedStateTable<'_, E>,
    driver: &mut Driver,
)
where
    E: FixedSize + AnyBitPattern,
    StateEntry<E>: KerxStateEntryExt,