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Errors while computing Layer Stack

Sublayer hierarchy with root layer @ErrorSublayerCycle/B.sdf@ has cycles. Detected when layer @ErrorSublayerCycle/A.sdf@ was seen in the layer stack for the second time.
Sublayer hierarchy with root layer @ErrorSublayerCycle/A.sdf@ has cycles. Detected when layer @ErrorSublayerCycle/B.sdf@ was seen in the layer stack for the second time.

