CBPDocument::getDocumentFieldsAliasesMap

static function getDocumentFieldsAliasesMap($fields)
{
	if (empty($fields) || !is_array($fields))
	{
		return [];
	}

	$aliases = [];
	foreach ($fields as $key => $property)
	{
		if (isset($property['Alias']))
		{
			$aliases[$property['Alias']] = $key;
		}
	}
	return $aliases;
}