One more place where we can use Countable interface

Ben Batschelet · Ben Batschelet · commit 996db2cd48a7 · 2018-03-19T15:26:24.000-05:00
diff --git a/app/code/Magento/Ui/DataProvider/AbstractDataProvider.php b/app/code/Magento/Ui/DataProvider/AbstractDataProvider.php
@@ -12,7 +12,7 @@
  * @api
  * @since 100.0.2
  */
-abstract class AbstractDataProvider implements DataProviderInterface
+abstract class AbstractDataProvider implements DataProviderInterface, \Countable
 {
     /**
      * Data Provider name

Original file line number	Diff line number	Diff line change
`@@ -12,7 +12,7 @@`
`12`	`12`	`* @api`
`13`	`13`	`* @since 100.0.2`
`14`	`14`	`*/`
`15`		`-abstract class AbstractDataProvider implements DataProviderInterface`
	`15`	`+abstract class AbstractDataProvider implements DataProviderInterface, \Countable`
`16`	`16`	`{`
`17`	`17`	`/**`
`18`	`18`	`* Data Provider name`