public function getFlattenedArray($array)
{
return ['a' => $array['a'], 'b.a' => $array['b']['a'], 'b.b.a' => $array['b']['b']['a'], 'b.c' => $array['b']['c'], 'c' => $array['c'], 'd.a' => $array['d']['a'], 'e.a' => $array['e']['a'], 'e.b' => $array['e']['b']];
}