pub unsafe extern "C" fn gtk_constraint_layout_add_constraints_from_description(
layout: *mut GtkConstraintLayout,
lines: *const *const c_char,
n_lines: size_t,
hspacing: c_int,
vspacing: c_int,
error: *mut *mut GError,
first_view: *const c_char
...
) -> *mut GList