[FLOW3-general] Accessing an object's entityUUID

[Zachary Davis, Cast Iron Coding LLC]

Hello,

I have an object that I want to edit via an extJS form. The form sends 
an asynchronous request to a controller, which returns a JSON 
representation of the object. Each object has a "number" property in 
this case, that uniquely identifies it -- but it seems to me that I 
should request the object by it's entityUUID. Is this the wrong 
approach? It looks like I can write a get method on the object that 
returns its FLOW3_Persistence_Entity_UUID. Are there any compelling 
reasons why I should avoid using this identifier in my application?

Zach