Return if var type has changed in PhpDocTypeChanger (#6813)

Author: carlos-granados

src/BetterPhpDocParser/PhpDocManipulator/PhpDocTypeChanger.php

@@ -58,25 +58,25 @@ public function __construct(
     ) {
     }
 
-    public function changeVarType(Stmt $stmt, PhpDocInfo $phpDocInfo, Type $newType): void
+    public function changeVarType(Stmt $stmt, PhpDocInfo $phpDocInfo, Type $newType): bool
     {
         // better skip, could crash hard
         if ($phpDocInfo->hasInvalidTag('@var')) {
-            return;
+            return false;
         }
 
         // make sure the tags are not identical, e.g imported class vs FQN class
         if ($this->typeComparator->areTypesEqual($phpDocInfo->getVarType(), $newType)) {
-            return;
+            return false;
         }
 
         // prevent existing type override by mixed
         if (! $phpDocInfo->getVarType() instanceof MixedType && $newType instanceof ConstantArrayType && $newType->getIterableValueType() instanceof NeverType) {
-            return;
+            return false;
         }
 
         if (! $this->newPhpDocFromPHPStanTypeGuard->isLegal($newType)) {
-            return;
+            return false;
         }
 
         // override existing type
@@ -94,6 +94,7 @@ public function changeVarType(Stmt $stmt, PhpDocInfo $phpDocInfo, Type $newType)
         }
 
         $this->docBlockUpdater->updateRefactoredNodeWithPhpDocInfo($stmt);
+        return true;
     }
 
     public function changeReturnType(FunctionLike $functionLike, PhpDocInfo $phpDocInfo, Type $newType): bool