[TASK] Use native type declarations in Commentable (#967)

Part of #811

Author: oliverklee

CHANGELOG.md

@@ -27,7 +27,7 @@ Please also have a look at our
 - Make all non-private properties `@internal` (#886)
 - Use more native type declarations and strict mode
   (#641, #772, #774, #778, #804, #841, #873, #875, #891, #922, #923, #933, #958,
-  #964)
+  #964, #967)
 - Add visibility to all class/interface constants (#469)
 
 ### Deprecated

src/CSSList/CSSList.php

@@ -470,7 +470,7 @@ public function addComments(array $comments): void
     /**
      * @return array<array-key, Comment>
      */
-    public function getComments()
+    public function getComments(): array
     {
         return $this->comments;
     }

src/Comment/Commentable.php

@@ -14,7 +14,7 @@ public function addComments(array $comments): void;
     /**
      * @return array<array-key, Comment>
      */
-    public function getComments();
+    public function getComments(): array;
 
     /**
      * @param array<array-key, Comment> $comments

src/Property/CSSNamespace.php

@@ -128,7 +128,7 @@ public function addComments(array $comments): void
     /**
      * @return array<array-key, Comment>
      */
-    public function getComments()
+    public function getComments(): array
     {
         return $this->comments;
     }

src/Property/Charset.php

@@ -105,7 +105,7 @@ public function addComments(array $comments): void
     /**
      * @return array<array-key, Comment>
      */
-    public function getComments()
+    public function getComments(): array
     {
         return $this->comments;
     }

src/Property/Import.php

@@ -111,7 +111,7 @@ public function addComments(array $comments): void
     /**
      * @return array<array-key, Comment>
      */
-    public function getComments()
+    public function getComments(): array
     {
         return $this->comments;
     }

src/Rule/Rule.php

@@ -294,7 +294,7 @@ public function addComments(array $comments): void
     /**
      * @return array<array-key, Comment>
      */
-    public function getComments()
+    public function getComments(): array
     {
         return $this->comments;
     }

src/RuleSet/RuleSet.php

@@ -305,7 +305,7 @@ public function addComments(array $comments): void
     /**
      * @return array<string, Comment>
      */
-    public function getComments()
+    public function getComments(): array
     {
         return $this->comments;
     }