Function gio_sys::g_vfs_register_uri_scheme

pub unsafe extern "C" fn g_vfs_register_uri_scheme(
    vfs: *mut GVfs, 
    scheme: *const c_char, 
    uri_func: GVfsFileLookupFunc, 
    uri_data: gpointer, 
    uri_destroy: GDestroyNotify, 
    parse_name_func: GVfsFileLookupFunc, 
    parse_name_data: gpointer, 
    parse_name_destroy: GDestroyNotify
) -> gboolean

This is supported on crate feature v2_50 only.