=3.0.2"` to your * composer.json. */ class StringChecker extends \Psalm\Plugin { /** * Checks an expression * * @param \PhpParser\Node\Expr $stmt * @param Context $context * @param CodeLocation $code_location * @param array $suppressed_issues * @return null|false */ public function checkExpression( \PhpParser\Node\Expr $stmt, Context $context, CodeLocation $code_location, array $suppressed_issues ) { if ($stmt instanceof \PhpParser\Node\Scalar\String_) { // Replace "Psalm" with your namespace $class_or_class_method = '/^\\\?Psalm(\\\[A-Z][A-Za-z0-9]+)+(::[A-Za-z0-9]+)?$/'; if (preg_match($class_or_class_method, $stmt->value)) { $fq_class_name = preg_split('/[:]/', $stmt->value)[0]; if (Checker\ClassChecker::checkFullyQualifiedClassLikeName( $fq_class_name, $code_location, $suppressed_issues ) === false ) { return false; } if ($fq_class_name !== $stmt->value) { if (Checker\MethodChecker::checkMethodExists( $stmt->value, $code_location, $suppressed_issues ) ) { return false; } } } } } } return new StringChecker;