### Question:
PartitionMapperFlowsFactory implements FlowsFactory { @Override public Collection<String> getInputFlows() { return Collections.emptySet(); }  @Override Collection<String> getInputFlows(); @Override Collection<String> getOutputFlows();  }### Answer:
@Test void testGetInputFlows() { PartitionMapperFlowsFactory factory = new PartitionMapperFlowsFactory(); Assertions.assertTrue(factory.getInputFlows().isEmpty()); }