revert setMethods change

tests/src/Unit/DataParserPluginBaseTest.php

@@ -74,7 +74,7 @@ class DataParserPluginBaseTest extends MigrateTestCase {
 
     return $this->getMockBuilder(DataParserPluginBaseMock::class)
       ->setConstructorArgs([$configuration, $plugin_id, $plugin_definition])
-      ->onlyMethods(['openSourceUrl'])
+      ->setMethods(['openSourceUrl'])
       ->getMockForAbstractClass();
   }