src/OwpMod.inc.php
public function getModDataItem($itemName)
    {
        if(isset($this->mod_data[$itemName])) {
            return $this->mod_data[$itemName];
        } else {
            throw new InvalidArgumentException("Mod data item ".$itemName." does not exist.", 20);
        }

    }
public function getModDataItem($itemName)
    {
        if(isset($this->mod_data[$itemName])) {
            return $this->mod_data[$itemName];
        } else {
            throw new InvalidArgumentException("Mod data item ".$itemName." does not exist.", 20);
        }

    }
getModDataItem

@method mixed getModDataItem($itemName) Add mod data by key
@access public

@param string $itemName Mod data array key

@return mixed Array value

@throws InvalidArgumentException Mod data key does not exist, code 20

@author  Brian Tafoya <btafoya@briantafoya.com>
@version 1.0