Merge pull request #2638 from magento-earl-grey/MAGETWO-91958

[earl] MAGETWO-91958: EE install fails on 7.2.5 with fatal error

Author: cpartica

lib/internal/Magento/Framework/Setup/Declaration/Schema/Db/DDLTriggerInterface.php

@@ -42,5 +42,5 @@ public function isApplicable(string $statement) : bool ;
      * @param ElementHistory $elementHistory
      * @return callable
      */
-    public function getCallback(ElementHistory $elementHistory) : Callable;
+    public function getCallback(ElementHistory $elementHistory) : callable;
 }

lib/internal/Magento/Framework/Setup/Declaration/Schema/Db/MySQL/DDL/Triggers/MigrateDataBetweenShards.php

@@ -62,7 +62,7 @@ public function isApplicable(string $statement) : bool
     /**
      * @inheritdoc
      */
-    public function getCallback(ElementHistory $elementHistory) : Callable
+    public function getCallback(ElementHistory $elementHistory) : callable
     {
         /** @var Table $newTable */
         $newTable = $elementHistory->getNew();

lib/internal/Magento/Framework/Setup/Declaration/Schema/Db/MySQL/DDL/Triggers/MigrateDataFrom.php

@@ -50,7 +50,7 @@ public function isApplicable(string $statement) : bool
     /**
      * @inheritdoc
      */
-    public function getCallback(ElementHistory $columnHistory) : Callable
+    public function getCallback(ElementHistory $columnHistory) : callable
     {
         /** @var Column $column */
         $column = $columnHistory->getNew();

lib/internal/Magento/Framework/Setup/Declaration/Schema/Db/MySQL/DDL/Triggers/MigrateDataFromAnotherTable.php

@@ -49,7 +49,7 @@ public function isApplicable(string $statement) : bool
     /**
      * @inheritdoc
      */
-    public function getCallback(ElementHistory $tableHistory) : Callable
+    public function getCallback(ElementHistory $tableHistory) : callable
     {
         /** @var Table $table */
         $table = $tableHistory->getNew();