>> A join node is a control node that synchronizes multiple flows. A join node has multiple incoming edges and one outgoing edge.
>> Determines where the join node appears within different Namespaces within the overall model, and its accessibility
>> If true, then the actions in the node execute in isolation from actions outside the node.
>> Indicates whether it is possible to further specialize a join node. If the value is true, then it is not possible to further specialize the join node.