fixing broken experiments

...time/variant/methodcall/framework/core/AbstractStage.java

...time/variant/methodcall/framework/core/ConsumerStage.java

...a/teetime/variant/methodcall/framework/core/Pipeline.java

...time/variant/methodcall/framework/core/ProducerStage.java

...java/teetime/variant/methodcall/framework/core/Stage.java

...time/variant/methodcall/framework/core/StageWithPort.java

.../java/teetime/variant/methodcall/stage/CollectorSink.java

src/main/java/teetime/variant/methodcall/stage/EndStage.java

...ain/java/teetime/variant/methodcall/stage/NoopFilter.java

...java/teetime/variant/methodcall/stage/ObjectProducer.java

...eetime/variant/methodcall/stage/StartTimestampFilter.java

...teetime/variant/methodcall/stage/StopTimestampFilter.java

...ant/methodcallWithPorts/framework/core/AbstractStage.java

...ant/methodcallWithPorts/framework/core/ConsumerStage.java

...variant/methodcallWithPorts/framework/core/InputPort.java

...ariant/methodcallWithPorts/framework/core/OutputPort.java

.../variant/methodcallWithPorts/framework/core/Pipeline.java

...ant/methodcallWithPorts/framework/core/ProducerStage.java

...ant/methodcallWithPorts/framework/core/RunnableStage.java

...ant/methodcallWithPorts/framework/core/StageWithPort.java