assertThat(b1.getBlockOutputs().size(), is(1));
assertThat(b1.getBlockInputs().get(0).getElementPort().getDescription(),
is(gen.input("op1").getDescription()));
assertThat(b1.getBlockOutputs().get(0).getElementPort().getDescription(),
is(gen.output("op1").getDescription()));
FlowBlock.Output binOut = bin.getBlockOutputs().get(0);
FlowBlock.Input boutIn = bout.getBlockInputs().get(0);
assertThat(binOut.getConnections().size(), is(2));
assertThat(boutIn.getConnections().size(), is(2));