## Petri Place Bean

The Petri Place bean represents states in a Petri Net agent. Places hold tokens which represent resources flowing through the network. Places can be initialized with an initialization expressions that is evaluated when the PetriNet agent is init()ed.

### Implementation

Places can hold tokens of any Java class. Initialization expressions can refer to any variables defined in the Petri Net agent. The common usage is to create and add objects to the tokens variable.

The following addition parameters relate to a Petri Place bean:

#### Parameters

Initialization Expression
  One or more ARL action expressions which are performed when the PetriNet agent is initialized (via the init() method).

### References

For more information refer to the PetriNetAgent details or PetriNetTutorial.