IKH Synchronizer Start P1obsS2obs
Synchronize	IKH Start P1S2
In 1	End (Synchronizer P1S1)
In 2
In 3
In 4
Out 1	IKH PwC Do something P1S2
Out 2	IKH Employer Do something P1S2
Out 3
Out 4
Snapshot	Yes
Tag	Start

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Synchronizer model.