Function lilv_sys::lilv_port_get_classes

pub unsafe extern "C" fn lilv_port_get_classes(
    plugin: *const LilvPlugin, 
    port: *const LilvPort
) -> *const LilvNodes

Get all the classes of a port. This can be used to determine if a port is an input, output, audio, control, midi, etc, etc, though it's simpler to use lilv_port_is_a(). The returned list does not include lv2:Port, which is implied. Returned value is shared and must not be destroyed by caller.