code: public FaunusPipeline has(final String key, final Compare compare, final Object... values) {
          this.state.assertNotLocked();
          this.state.assertNoProperty();
  
          this.compiler.addMap(PropertyFilterMap.Map.class,
                  NullWritable.class,
                  FaunusVertex.class,
                  PropertyFilterMap.createConfiguration(this.state.getElementType(), key, compare, values));
          makeMapReduceString(PropertyFilterMap.class, compare.name(), Arrays.asList(values));
          return this;
      }
docs: Emit the current element if it has a property value comparable to the provided values.
  
  @param key     the property key of the element
  @param compare the comparator
  @param values  the values to compare against where only one needs to succeed (or'd)
  @return the extended FaunusPipeline