Function try_get_interface_metadata_for 

pub fn try_get_interface_metadata_for<DynInterface>(
    dyn_interface_id: TypeId,
    this: &DynInterface,
) -> Option<BoxedInterfaceMetadata>
where
    DynInterface: Pointee<Metadata = DynMetadata<DynInterface>> + ?Sized + 'static,

A base piece for SupportsInterfaces::get_interface_metadata implementation.

Checks if dyn_interface_id is a type id of DynInterface, and if so returns appropriate thick pointer metadata, otherwise returns None.