`use` keyword

If I don't use that keyword, it gives errors with formatting if typing full namespace under an if statement (I think) or only for local namespaces (ServerError is locally in the project)

if ($isAPI && $_SERVER['REQUEST_METHOD'] != 'POST') {
    ServerError::METHOD_NOT_ALLOWED->send();
    exit(1);
}
if (!$exists) {
    ServerError::NOT_FOUND->send();
    exit(1);
}

it gives error if:

if ($isAPI && $_SERVER['REQUEST_METHOD'] != 'POST') {
    TestPHP\Enums\ServerError::METHOD_NOT_ALLOWED->send();
    exit(1);
}
if (!$exists) {
    TestPHP\Enums\ServerError::NOT_FOUND->send();
    exit(1);
}

Reproduce the formatting error with the two PHP snippets, comparing the unqualified ServerError references with the fully qualified TestPHP\Enums\ServerError references inside the if statements. Trace the formatter's handling of these namespace references and ensure both forms are accepted without an error, then verify formatting output for the examples.