https://help.sap.com/doc/3966379eaef744eda73e09718de2cc63/6.3.0.0/en-US/de/hybris/platform/cscockpit/widgets/renderers/impl/CheckoutCartWidgetRenderer.CartEntryQtyChangeEventListener.html
CheckoutCartWidgetRenderer.CartEntryQtyChangeEventListener (hybris Commerce Suite 6.3.0.0-SNAPSHOT)
commerce suitehybrissnapshot