src/MWSMerchantFulfillmentService/Model/ShipmentRequestDetails.php
public function setItemList($value)
    {
        if (!$this->_isNumericArray($value)) {
            $value = array ($value);
        }
        $this->_fields['ItemList']['FieldValue'] = $value;
        return $this;
    }
public function setItemList($value)
    {
        if (!$this->_isNumericArray($value)) {
            $value = array ($value);
        }
        $this->_fields['ItemList']['FieldValue'] = $value;
        return $this;
    }
Set the value of the ItemList property.

@param array itemList
@return this instance