There seems to be some misunderstanding between `getName()` and `getLabel()`. In [this commit](https://github.com/zendframework/ZendDiagnostics/commit/b62f9d4b612d17a998bf6cce7804733d76fd3415) I have added the missing `setLabel()` functionality, so one could "label" a check instance with any custom description...

In the above example, one could write:
````php
$check = new Check\DiskUsage(0.5, "/tmp");
$check->setLabel("Make sure that temp has at least 50% free space");
$check->check();
````

Also, right now in AbstractCheck the `getName()` is currently an alias for `getLabel()` so your implementation makes little sense.