func (v *Value) SetUInt64(val uint64) {
	C.g_value_set_uint64(v.native(), C.guint64(val))
}
func (v *Value) SetUInt64(val uint64) {
	C.g_value_set_uint64(v.native(), C.guint64(val))
}
// SetUInt64 is a wrapper around g_value_set_uint64().