public String toString() {
    @NonNls StringBuilder buffer = new StringBuilder();
    buffer.
      append("CF range:[").
      append(myStart).
      append("-").
      append(myEnd).
      append("]\n");

    final List<Instruction> instructions = getInstructions();
    for(int i = 0; i < instructions.size(); i++){
      Instruction instruction = instructions.get(i);
      buffer.append(i).append(": ").append(instruction.toString()).append("\n");
    }
    return buffer.toString();
  }
public String toString()