/****f* silccore/SilcArgumentAPI/silc_argument_get_first_arg
*
* SYNOPSIS
*
* unsigned char *silc_argument_get_first_arg(SilcArgumentPayload payload,
/****f* silccore/SilcArgumentAPI/silc_argument_get_first_arg
*
* SYNOPSIS
*
* unsigned char *silc_argument_get_first_arg(SilcArgumentPayload payload,