code: public void updateExecutionState(final ExecutionState executionState) {
  
  		final Iterator<ExecutionVertex> it = this.vertices.iterator();
  		while (it.hasNext()) {
  			final ExecutionVertex vertex = it.next();
  			vertex.updateExecutionState(executionState);
  		}
  
  	}
docs: Updates the execution state for all vertices included in this pipeline.
  
  @param executionState
  the execution state to set for all vertices included in this pipeline