public function initializeArguments()
{
parent::initializeArguments();
$this->overrideArgument('content', 'string', 'Array or array-convertible object to be imploded by glue');
$this->overrideArgument('glue', 'string', 'String used as glue in the content to be imploded. Use glue value of "constant:NAMEOFCONSTANT" ' . '(fx "constant:LF" for linefeed as glue)', false, ',');
}