Always use getKeepVoidType

phpstan.neon.dist

@@ -50,11 +50,6 @@ parameters:
             message: "#but it's missing from the PHPDoc @throws tag\\.$#" # allow uncatched exceptions in tests
             path: tests/*
 
-        -
-            message: '#^Call to function method_exists\(\) with PHPStan\\Analyser\\Scope and ''getKeepVoidType'' will always evaluate to true\.$#'
-            path: src/Rule/ForbidUnusedMatchResultRule.php
-            reportUnmatched: false # fails only for PHPStan > 1.10.49
-
         # ignore BC promises
         - identifier: phpstanApi.class
         - identifier: phpstanApi.method

src/Rule/ForbidUnusedMatchResultRule.php

@@ -10,11 +10,9 @@
 use PHPStan\Rules\Rule;
 use PHPStan\Rules\RuleErrorBuilder;
 use PHPStan\Type\NeverType;
-use PHPStan\Type\Type;
 use PHPStan\Type\TypeCombinator;
 use PHPStan\Type\VerbosityLevel;
 use ShipMonk\PHPStan\Visitor\UnusedMatchVisitor;
-use function method_exists;
 
 /**
  * @implements Rule<Match_>
@@ -36,10 +34,7 @@ public function processNode(Node $node, Scope $scope): array
         $returnedTypes = [];
 
         foreach ($node->arms as $arm) {
-            /** @var Type $armType */
-            $armType = method_exists($scope, 'getKeepVoidType') // Needed since https://github.com/phpstan/phpstan/releases/tag/1.10.49, can be dropped once we bump PHPStan version gte that
-                ? $scope->getKeepVoidType($arm->body)
-                : $scope->getType($arm->body);
+            $armType = $scope->getKeepVoidType($arm->body);
 
             if (!$armType->isVoid()->yes() && !$armType instanceof NeverType && !$arm->body instanceof Assign) {
                 $returnedTypes[] = $armType;