core:
import edu.neu.ccs.demeter.dj.*;
import java.util.*;
import java.lang.reflect.*;

import edu.neu.ccs.demeter.*;
add: class PartGatherVisitor extends MyVisitor {
  public constructor PartGatherVisitor() {{
    super();
  }}
{{
    Set partStorage;

    PartGatherVisitor(Set store) {
      partStorage = store;
    }

    void before(Regular host) {
      String name = host.get_vertex().get_vertex().get_vertex_name().toString().toLowerCase().intern();
      if (partStorage.contains(name))
        //throw new RuntimeException("Part " + name + " already exists!");
        System.out.println("Part " + name + " already exists!");
      partStorage.add(name);
    }

    void before(Labeled host) {
      String name = host.get_label_name().toString().intern();
      if (partStorage.contains(name))
        //throw new RuntimeException("Part " + name + " already exists!");
        System.out.println("Part " + name + " already exists!");
      partStorage.add(name);
    }
  }}
{{  void universal_trv0_bef(UniversalVisitor _v_) {
    super.universal_trv0_bef(_v_);
    ((UniversalVisitor) _v_).before(this);
  }
}}
{{  void universal_trv0_aft(UniversalVisitor _v_) {
    ((UniversalVisitor) _v_).after(this);
    super.universal_trv0_aft(_v_);
  }
}}
{{  void universal_trv0(UniversalVisitor _v_) {
    universal_trv0_bef(_v_);
    super.universal_trv0(_v_);
    universal_trv0_aft(_v_);
  }
}}
}