BT_ASSERT_PRE_DEV_NON_NULL(field, "Field");
BT_ASSERT_PRE_DEV_NON_NULL(label_array, "Label array (output)");
BT_ASSERT_PRE_DEV_NON_NULL(label_array, "Count (output)");
BT_ASSERT_PRE_DEV_NON_NULL(field, "Field");
BT_ASSERT_PRE_DEV_NON_NULL(label_array, "Label array (output)");
BT_ASSERT_PRE_DEV_NON_NULL(label_array, "Count (output)");