Use Code (or something more meaningful) instead of PK in Hybris HMC Editor

By default, when you create and specify an item type in the hmc.xml, the PK will be displayed as the item's identifier. This may not always be appropriate, for example when referencing a user. To use another property as the displayed identifier, i.e the email, use the following construct:

<type>
.
.
.

   <defaultreference mode="replace">
      <itemlayout>
         <attribute name="someOtherPropertyName"/>
      </itemlayout>
   </defaultreference>
</type>