Storing entities
  
    - Storage component for supplychain example
      
	- input for product entities (with type and amount)
 
	
	- input for order entities (with type and amount)
 
	
	- output for product entities
 
	
	- signal output for inventory vector
 
	
	- parameter for initial stock
 
      
     
    - Possible storage components in SimEvents
      
	- N-server: how to get an entity of given type?
 
	- resources: fixed amount!
 
	
	- queues: one necessary for every product type!
 
	- → do it yourself with Simulink
 
      
     
    - Implementation of inventory