private static function filterDuplicates(array $names, CommandCollection $commands)
{
$filteredNames = array();
foreach ($names as $nameToFilter) {
// Check all existing names for duplicates
foreach ($filteredNames as $filteredName) {
// $nameToFilter is a duplicate - skip
if ($commands->get($nameToFilter) === $commands->get($filteredName)) {
continue 2;
}
}
$filteredNames[] = $nameToFilter;
}
return $filteredNames;
}