When you create an Ensemble production your namespace acquires a new class definition. For example here is what the class that defines the Demo.Loan.BankUSProduction production in the ENSDEMO namespace looks like when opened in Studio:
Class Demo.Loan.BankUSProduction Extends Ens.Production [ ClassType = "", ProcedureBlock ]
{
XData ProductionDefinition
{
<Production Name="Demo.Loan.BankUSProduction" TestingEnabled="true">
<ActorPoolSize>2</ActorPoolSize>
<Item Name="Demo.Loan.BankUSTerminalService" ClassName="Demo.Loan.BankUSTerminalService" PoolSize="0" Enabled="true"

