Function gio_sys::g_file_load_contents

pub unsafe extern "C" fn g_file_load_contents(
    file: *mut GFile, 
    cancellable: *mut GCancellable, 
    contents: *mut *mut u8, 
    length: *mut size_t, 
    etag_out: *mut *mut c_char, 
    error: *mut *mut GError
) -> gboolean