Add regression test for anonymous class in trait

Author: herndlm

Diff for: tests/PHPStan/Rules/Methods/MissingMethodParameterTypehintRuleTest.php

@@ -116,4 +116,9 @@ public function testBug3723(): void
 		$this->analyse([__DIR__ . '/data/bug-3723.php'], []);
 	}
 
+	public function testBug6472(): void
+	{
+		$this->analyse([__DIR__ . '/data/bug-6472.php'], []);
+	}
+
 }

Diff for: tests/PHPStan/Rules/Methods/data/bug-6472.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Bug6472;
+
+trait A
+{
+	/**
+	 * @param mixed[] $array
+	 */
+	public static function a(array $array): void
+	{
+		new class {
+
+		};
+	}
+
+	/**
+	 * @param mixed[] $array
+	 */
+	public static function b(array $array): void
+	{
+	}
+
+}
+
+class B
+{
+	use A;
+}