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

import edu.neu.ccs.demeter.*;
add: abstract class Opt_labeled_term extends Any_vertex {
  protected Term vertex;
  public Term get_vertex() {{ return vertex; }}
  public void set_vertex(Term new_vertex)
    {{ vertex = new_vertex; }}
  public constructor Opt_labeled_term() {{ super(); }}
  public constructor Opt_labeled_term(Term vertex) {{
    super();
    set_vertex(vertex);
  }}
{{  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_) {
    ((UniversalVisitor) _v_).before_vertex(this, vertex);
    vertex.universal_trv0(_v_);
    ((UniversalVisitor) _v_).after_vertex(this, vertex);
    super.universal_trv0(_v_);
  }
}}
{{  void __trav_display_Cd_graph_trv_bef(DisplayVisitor __v0) {
    super.__trav_display_Cd_graph_trv_bef(__v0);
    ((UniversalVisitor) __v0).before(this);
  }
}}
{{  void __trav_display_Cd_graph_trv_aft(DisplayVisitor __v0) {
    ((UniversalVisitor) __v0).after(this);
    super.__trav_display_Cd_graph_trv_aft(__v0);
  }
}}
{{  void __trav_display_Cd_graph_trv(DisplayVisitor __v0) {
    ((DisplayVisitor) __v0).before_vertex(this, vertex);
    vertex.__trav_display_Cd_graph_trv(__v0);
    ((UniversalVisitor) __v0).after_vertex(this, vertex);
    super.__trav_display_Cd_graph_trv(__v0);
  }
}}
{{  void __trav_checkDefined_Cd_graph_trv_bef(__V_Cd_graph_checkDefined __v0) {
    super.__trav_checkDefined_Cd_graph_trv_bef(__v0);
  }
}}
{{  void __trav_checkDefined_Cd_graph_trv_aft(__V_Cd_graph_checkDefined __v0) {
    super.__trav_checkDefined_Cd_graph_trv_aft(__v0);
  }
}}
{{  void __trav_checkDefined_Cd_graph_trv(java.util.BitSet nodes, __V_Cd_graph_checkDefined __v0) {
    { java.util.BitSet newnodes = new java.util.BitSet();
      newnodes.set(1);
      newnodes.and(nodes);
      if (!newnodes.equals(new java.util.BitSet())) {
        vertex.__trav_checkDefined_Cd_graph_trv(newnodes, __v0);
      }
    }
  }
}}
{{  void __trav_uniqueparts_Cd_graph_trv_bef(__V_Cd_graph_uniqueparts __v0) {
    super.__trav_uniqueparts_Cd_graph_trv_bef(__v0);
  }
}}
{{  void __trav_uniqueparts_Cd_graph_trv_aft(__V_Cd_graph_uniqueparts __v0) {
    super.__trav_uniqueparts_Cd_graph_trv_aft(__v0);
  }
}}
{{  void __trav_uniqueparts_Cd_graph_trv(java.util.BitSet nodes, __V_Cd_graph_uniqueparts __v0) {
    { java.util.BitSet newnodes = new java.util.BitSet();
      newnodes.set(2);
      newnodes.and(nodes);
      if (!newnodes.equals(new java.util.BitSet())) {
        vertex.__trav_uniqueparts_Cd_graph_trv(newnodes, __v0);
      }
    }
  }
}}
{{  void __trav_check_for_inheritence_Cd_graph_trv_bef(__V_Cd_graph_check_for_inheritence __v0) {
    super.__trav_check_for_inheritence_Cd_graph_trv_bef(__v0);
  }
}}
{{  void __trav_check_for_inheritence_Cd_graph_trv_aft(__V_Cd_graph_check_for_inheritence __v0) {
    super.__trav_check_for_inheritence_Cd_graph_trv_aft(__v0);
  }
}}
{{  void __trav_check_for_inheritence_Cd_graph_trv(java.util.BitSet nodes, __V_Cd_graph_check_for_inheritence __v0) {
    { java.util.BitSet newnodes = new java.util.BitSet();
      newnodes.set(2);
      newnodes.and(nodes);
      if (!newnodes.equals(new java.util.BitSet())) {
        vertex.__trav_check_for_inheritence_Cd_graph_trv(newnodes, __v0);
      }
    }
  }
}}
{{  void __trav_get_SuperClasses_Cd_graph_trv_bef(__V_Cd_graph_get_SuperClasses __v0) {
    super.__trav_get_SuperClasses_Cd_graph_trv_bef(__v0);
  }
}}
{{  void __trav_get_SuperClasses_Cd_graph_trv_aft(__V_Cd_graph_get_SuperClasses __v0) {
    super.__trav_get_SuperClasses_Cd_graph_trv_aft(__v0);
  }
}}
{{  void __trav_get_SuperClasses_Cd_graph_trv(java.util.BitSet nodes, __V_Cd_graph_get_SuperClasses __v0) {
    { java.util.BitSet newnodes = new java.util.BitSet();
      newnodes.set(2);
      newnodes.and(nodes);
      if (!newnodes.equals(new java.util.BitSet())) {
        vertex.__trav_get_SuperClasses_Cd_graph_trv(newnodes, __v0);
      }
    }
  }
}}
}