public String toString(){
  StringBuffer s=new StringBuffer();
  boolean colon=false;
  s.append("ClassHierarchy:{");
  for (  TypeNode typeNode : typeNodeList) {
    if (colon) {
      s.append(",");
    }
 else {
      colon=true;
    }
    s.append(typeNode);
  }
  s.append("}");
  return s.toString();
}

public String toString ( ) { StringBuffer s = new StringBuffer ( ) ; boolean colon = false ; s . append ( "ClassHierarchy:{" ) ; for ( TypeNode typeNode : typeNodeList ) { if ( colon ) { s . append ( "," ) ; } else { colon = true ; } s . append ( typeNode ) ; } s . append ( "}" ) ; return s . toString ( ) ; }
returns a string representation of this object
