Customer annotation handler

``` php
class MyTest extends TestCase
{
public function useAnnotation($name, $value)
{
}

/**
* @foo bar
*/
public function testAdd()
{
}
}
```

The issue provides only a PHP example in the body and does not name an implementation file or test. Start by locating how Concise handles PHPUnit annotations and the useAnnotation method, then determine the intended behavior for @foo bar and how completion should be verified.

Written by the indexing model from the issue text.