Copy copy methods to Item and Property

Author: thiemowmde

src/Entity/Item.php

@@ -319,4 +319,15 @@ public function equals( $target ) {
 			&& $this->statements->equals( $target->statements );
 	}
 
+	/**
+	 * @see EntityDocument::copy
+	 *
+	 * @since 0.1
+	 *
+	 * @return self
+	 */
+	public function copy() {
+		return unserialize( serialize( $this ) );
+	}
+
 }

src/Entity/Property.php

@@ -251,4 +251,15 @@ public function setStatements( StatementList $statements ) {
 		$this->statements = $statements;
 	}
 
+	/**
+	 * @see EntityDocument::copy
+	 *
+	 * @since 0.1
+	 *
+	 * @return self
+	 */
+	public function copy() {
+		return unserialize( serialize( $this ) );
+	}
+
 }