Learn how to test the SelectEntity plugin by setting a default entity on quotes using a custom field and sample code.

1. Add a custom field, DefaultEntity__c, on the Account object.
2. Populate the DefaultEntity__c field with an entity Id.
3. Use the following code to implement the custom SelectEntity plugin.
4. Register the plugin for the SelectEntity component as described in Component Registration .
5. Create a new quote and see the entity field pre-populated with the default entity you gave in Step #2.

   global without sharing class MySelectEntityPlugin implements 
      zqu.SelectEntityComponentOptions.ISelectEntityPlugin {
         global zqu.SelectEntityComponentOptions.SelectEntityPluginResponse 
       ​     selectEntityForNewQuote(String accountId, String opportunityId) {
               zqu.SelectEntityComponentOptions.SelectEntityPluginResponse resp = 
               ​   new zqu.SelectEntityComponentOptions.SelectEntityPluginResponse();
               Account acc = 
               ​   [SELECT Id,DefaultEntity__c FROM Account WHERE Id=:accountId LIMIT 1];
               if(acc.DefaultEntity__c != null) {        
                  resp.selectedId = acc.DefaultEntity__c;
                  resp.autoSubmit = true;
               }
               return resp;
         }
   }