diff --git a/Api/Data/EntryInterface.php b/Api/Data/EntryInterface.php
index 08d08e867441b9d2ef70208dfd2ed2c2451a74fc..da79fdd2aeeaf04826ac4b2c867c24bfb8254404 100644
--- a/Api/Data/EntryInterface.php
+++ b/Api/Data/EntryInterface.php
@@ -14,50 +14,50 @@ interface EntryInterface
     /**
      * @return string
      */
-    public function getKey(): string;
+    public function getKey();
 
     /**
      * @param string $key
      */
-    public function setKey(string $key): void;
+    public function setKey($key);
 
     /**
      * @return bool
      */
-    public function isMaintained(): bool;
+    public function isMaintained();
 
     /**
      * @param bool $isMaintained
      */
-    public function setIsMaintained(bool $isMaintained): void;
+    public function setIsMaintained($isMaintained);
 
     /**
      * @return array
      */
-    public function getStores(): array;
+    public function getStores();
 
     /**
      * @param array $stores
      */
-    public function setStores(array $stores): void;
+    public function setStores(array $stores);
 
     /**
      * @return string
      */
-    public function getMediaDirectory(): string;
+    public function getMediaDirectory();
 
     /**
      * @param string $path
      */
-    public function setMediaDirectory(string $path): void;
+    public function setMediaDirectory($path);
 
     /**
      * @return array
      */
-    public function getMediaFiles(): array;
+    public function getMediaFiles();
 
     /**
      * @param array $files
      */
-    public function setMediaFiles(array $files): void;
+    public function setMediaFiles(array $files);
 }
diff --git a/Model/BlockEntry.php b/Model/BlockEntry.php
index 7c91c6abf027f809588012212071f13c5fe0399e..c67ea4a25fc267f479183504bd4daf2d6bf633ed 100644
--- a/Model/BlockEntry.php
+++ b/Model/BlockEntry.php
@@ -11,7 +11,7 @@ class BlockEntry extends Block implements BlockEntryInterface
     /**
      * @return string
      */
-    public function getKey(): string
+    public function getKey()
     {
         return (string)$this->getData(BlockEntryInterface::KEY);
     }
@@ -19,7 +19,7 @@ class BlockEntry extends Block implements BlockEntryInterface
     /**
      * @param string $key
      */
-    public function setKey(string $key): void
+    public function setKey($key)
     {
         $this->setData(BlockEntryInterface::KEY, $key);
     }
@@ -27,7 +27,7 @@ class BlockEntry extends Block implements BlockEntryInterface
     /**
      * @return bool
      */
-    public function isMaintained(): bool
+    public function isMaintained()
     {
         return (bool)$this->getData(BlockEntryInterface::IS_MAINTAINED);
     }
@@ -35,7 +35,7 @@ class BlockEntry extends Block implements BlockEntryInterface
     /**
      * @param bool $isMaintained
      */
-    public function setIsMaintained(bool $isMaintained): void
+    public function setIsMaintained($isMaintained)
     {
         $this->setData(BlockEntryInterface::IS_MAINTAINED, $isMaintained);
     }
@@ -43,7 +43,7 @@ class BlockEntry extends Block implements BlockEntryInterface
     /**
      * @return array
      */
-    public function getStores(): array
+    public function getStores()
     {
         return (array)$this->getData(BlockEntryInterface::STORES);
     }
@@ -51,7 +51,7 @@ class BlockEntry extends Block implements BlockEntryInterface
     /**
      * @param array $stores
      */
-    public function setStores(array $stores): void
+    public function setStores(array $stores)
     {
         $this->setData(BlockEntryInterface::STORES, $stores);
     }
@@ -59,7 +59,7 @@ class BlockEntry extends Block implements BlockEntryInterface
     /**
      * @return string
      */
-    public function getMediaDirectory(): string
+    public function getMediaDirectory()
     {
         return (string)$this->getData(BlockEntryInterface::MEDIA_DIRECTORY);
     }
@@ -67,7 +67,7 @@ class BlockEntry extends Block implements BlockEntryInterface
     /**
      * @param string $path
      */
-    public function setMediaDirectory(string $path): void
+    public function setMediaDirectory($path)
     {
         $this->setData(BlockEntryInterface::MEDIA_DIRECTORY, $path);
     }
@@ -75,7 +75,7 @@ class BlockEntry extends Block implements BlockEntryInterface
     /**
      * @return array
      */
-    public function getMediaFiles(): array
+    public function getMediaFiles()
     {
         return (array)$this->getData(BlockEntryInterface::MEDIA_FILES);
     }
@@ -83,7 +83,7 @@ class BlockEntry extends Block implements BlockEntryInterface
     /**
      * @param array $files
      */
-    public function setMediaFiles(array $files): void
+    public function setMediaFiles(array $files)
     {
         $this->setData(BlockEntryInterface::MEDIA_FILES, $files);
     }
diff --git a/Model/PageEntry.php b/Model/PageEntry.php
index 7824ec6c1f38eb682e888d5a410ef1928c255849..c9b43c635f1f955153519785a4748057bfe33381 100644
--- a/Model/PageEntry.php
+++ b/Model/PageEntry.php
@@ -11,7 +11,7 @@ class PageEntry extends Page implements PageEntryInterface
     /**
      * @return string
      */
-    public function getKey(): string
+    public function getKey()
     {
         return (string)$this->getData(PageEntryInterface::KEY);
     }
@@ -19,7 +19,7 @@ class PageEntry extends Page implements PageEntryInterface
     /**
      * @param string $key
      */
-    public function setKey(string $key): void
+    public function setKey($key)
     {
         $this->setData(PageEntryInterface::KEY, $key);
     }
@@ -27,7 +27,7 @@ class PageEntry extends Page implements PageEntryInterface
     /**
      * @return bool
      */
-    public function isMaintained(): bool
+    public function isMaintained()
     {
         return (bool)$this->getData(PageEntryInterface::IS_MAINTAINED);
     }
@@ -35,7 +35,7 @@ class PageEntry extends Page implements PageEntryInterface
     /**
      * @param bool $isMaintained
      */
-    public function setIsMaintained(bool $isMaintained): void
+    public function setIsMaintained($isMaintained)
     {
         $this->setData(PageEntryInterface::IS_MAINTAINED, $isMaintained);
     }
@@ -43,7 +43,7 @@ class PageEntry extends Page implements PageEntryInterface
     /**
      * @return array
      */
-    public function getStores(): array
+    public function getStores()
     {
         return (array)$this->getData(PageEntryInterface::STORES);
     }
@@ -51,7 +51,7 @@ class PageEntry extends Page implements PageEntryInterface
     /**
      * @param array $stores
      */
-    public function setStores(array $stores): void
+    public function setStores(array $stores)
     {
         $this->setData(PageEntryInterface::STORES, $stores);
     }
@@ -59,7 +59,7 @@ class PageEntry extends Page implements PageEntryInterface
     /**
      * @return string
      */
-    public function getMediaDirectory(): string
+    public function getMediaDirectory()
     {
         return (string)$this->getData(PageEntryInterface::MEDIA_DIRECTORY);
     }
@@ -67,7 +67,7 @@ class PageEntry extends Page implements PageEntryInterface
     /**
      * @param string $path
      */
-    public function setMediaDirectory(string $path): void
+    public function setMediaDirectory(string $path)
     {
         $this->setData(PageEntryInterface::MEDIA_DIRECTORY, $path);
     }
@@ -75,7 +75,7 @@ class PageEntry extends Page implements PageEntryInterface
     /**
      * @return array
      */
-    public function getMediaFiles(): array
+    public function getMediaFiles()
     {
         return (array)$this->getData(PageEntryInterface::MEDIA_FILES);
     }
@@ -83,7 +83,7 @@ class PageEntry extends Page implements PageEntryInterface
     /**
      * @param array $files
      */
-    public function setMediaFiles(array $files): void
+    public function setMediaFiles(array $files)
     {
         $this->setData(PageEntryInterface::MEDIA_FILES, $files);
     }