public static function load($id): bool
    {
        $loaded = false;
        if (isset(static::$files[$id])) {
            $loaded = static::$files[$id] === true;

            if (! $loaded) {
                assert(file_exists(static::$files[$id]));

                include static::$files[$id];
                $loaded = static::$files[$id] = true;
            }
        }
        return $loaded;
    }
public static function load($id): bool
    {
        $loaded = false;
        if (isset(static::$files[$id])) {
            $loaded = static::$files[$id] === true;

            if (! $loaded) {
                assert(file_exists(static::$files[$id]));

                include static::$files[$id];
                $loaded = static::$files[$id] = true;
            }
        }
        return $loaded;
    }
public static function load ( $ id ) : bool { $ loaded = false ; if ( isset ( static :: $ files [ $ id ] ) ) { $ loaded = static :: $ files [ $ id ] === true ; if ( ! $ loaded ) { assert ( file_exists ( static :: $ files [ $ id ] ) ) ; include static :: $ files [ $ id ] ; $ loaded = static :: $ files [ $ id ] = true ; } } return $ loaded ; }
Load the given collection.

Asserts file existence because it should never be the case that they don't
exist on production.

@param $id
@return bool
Load the given collection .