Finds a file by class name while caching lookups to APC.
string $class A class name to resolve to file:
string|null The path, if found
Overrides UniversalClassLoader::findFile
public function findFile($class) {
if (false === ($file = apc_fetch($this->prefix . $class))) {
apc_store($this->prefix . $class, $file = parent::findFile($class));
}
return $file;
}