Function webkit2gtk_sys::webkit_web_view_can_execute_editing_command

pub unsafe extern "C" fn webkit_web_view_can_execute_editing_command(
    web_view: *mut WebKitWebView,
    command: *const c_char,
    cancellable: *mut GCancellable,
    callback: GAsyncReadyCallback,
    user_data: gpointer
)