Function gtk_sys::gtk_text_buffer_serialize

pub unsafe extern "C" fn gtk_text_buffer_serialize(
    register_buffer: *mut GtkTextBuffer, 
    content_buffer: *mut GtkTextBuffer, 
    format: GdkAtom, 
    start: *const GtkTextIter, 
    end: *const GtkTextIter, 
    length: *mut size_t
) -> *mut u8