code: public FaunusPipeline simplePath() {
          this.state.assertNotLocked();
          this.state.assertNoProperty();
  
          this.compiler.addMap(CyclicPathFilterMap.Map.class,
                  NullWritable.class,
                  FaunusVertex.class,
                  CyclicPathFilterMap.createConfiguration(this.state.getElementType()));
          makeMapReduceString(CyclicPathFilterMap.class);
          return this;
      }
docs: Emit the element only if it was arrived at via a path that does not have cycles in it.
  
  @return the extended FaunusPipeline