installed plugin Easy Digital Downloads version 3.1.0.3

wp-content/plugins/easy-digital-downloads/includes/database/engine/class-row.php

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+<?php
+/**
+ * Base Custom Database Table Row Class.
+ *
+ * @package     Database
+ * @subpackage  Row
+ * @copyright   Copyright (c) 2020
+ * @license     https://opensource.org/licenses/gpl-2.0.php GNU Public License
+ * @since       1.0.0
+ */
+namespace EDD\Database;
+
+// Exit if accessed directly
+defined( 'ABSPATH' ) || exit;
+
+/**
+ * Base database row class.
+ *
+ * This class exists solely for other classes to extend (and to encapsulate
+ * database schema changes for those objects) to help separate the needs of the
+ * application layer from the requirements of the database layer.
+ *
+ * For example, if a database column is renamed or a return value needs to be
+ * formatted differently, this class will make sure old values are still
+ * supported and new values do not conflict.
+ *
+ * @since 1.0.0
+ */
+class Row extends Base {
+
+	/**
+	 * Construct a database object.
+	 *
+	 * @since 1.0.0
+	 *
+	 * @param mixed Null by default, Array/Object if not
+	 */
+	public function __construct( $item = null ) {
+		if ( ! empty( $item ) ) {
+			$this->init( $item );
+		}
+	}
+
+	/**
+	 * Initialize class properties based on data array.
+	 *
+	 * @since 1.0.0
+	 *
+	 * @param array $data
+	 */
+	private function init( $data = array() ) {
+		$this->set_vars( $data );
+	}
+
+	/**
+	 * Determines whether the current row exists.
+	 *
+	 * @since 1.0.0
+	 *
+	 * @return bool
+	 */
+	public function exists() {
+		return ! empty( $this->id );
+	}
+}