src/PathBuilder/FileAppenderTrait.php
protected function _appendFileToPaths(array $paths, $file)
    {
        if (!$this->_isAtom($file)) {
            return [$file];
        }

        $appendFile = function($path) use($file) {
            return $this->_joinPaths($path, $file);
        };

        return array_map($appendFile, $paths);
    }
protected function _appendFileToPaths(array $paths, $file)
    {
        if (!$this->_isAtom($file)) {
            return [$file];
        }

        $appendFile = function($path) use($file) {
            return $this->_joinPaths($path, $file);
        };

        return array_map($appendFile, $paths);
    }
Append the filename to the array of paths.

@param array $paths The paths to append to.
@param string $file The filename.
@return array The paths with the file name appended.