Function sourceview5_sys::gtk_source_snippet_manager_list_matching

pub unsafe extern "C" fn gtk_source_snippet_manager_list_matching(
    self_: *mut GtkSourceSnippetManager, 
    group: *const c_char, 
    language_id: *const c_char, 
    trigger_prefix: *const c_char
) -> *mut GListModel

This is supported on crate feature v5_0 only.