used PhpStorm Language attribute

composer.json

@@ -22,7 +22,8 @@
 		"nette/tester": "^2.4",
 		"nikic/php-parser": "^4.15",
 		"tracy/tracy": "^2.8",
-		"phpstan/phpstan": "^1.0"
+		"phpstan/phpstan": "^1.0",
+		"jetbrains/phpstorm-attributes": "dev-master"
 	},
 	"suggest": {
 		"nikic/php-parser": "to use ClassType::from(withBodies: true) & ClassType::fromCode()"

src/PhpGenerator/Traits/FunctionLike.php

@@ -9,6 +9,7 @@
 
 namespace Nette\PhpGenerator\Traits;
 
+use JetBrains\PhpStorm\Language;
 use Nette;
 use Nette\PhpGenerator\Dumper;
 use Nette\PhpGenerator\Parameter;
@@ -31,7 +32,11 @@ trait FunctionLike
 
 
 	/** @param  ?mixed[]  $args */
-	public function setBody(string $code, ?array $args = null): static
+	public function setBody(
+		#[Language('PHP')]
+		string $code,
+		?array $args = null,
+	): static
 	{
 		$this->body = $args === null
 			? $code
@@ -47,7 +52,11 @@ public function getBody(): string
 
 
 	/** @param  ?mixed[]  $args */
-	public function addBody(string $code, ?array $args = null): static
+	public function addBody(
+		#[Language('PHP')]
+		string $code,
+		?array $args = null,
+	): static
 	{
 		$this->body .= ($args === null ? $code : (new Dumper)->format($code, ...$args)) . "\n";
 		return $this;