int result = 7; if (caller != null) result += caller.hashCode(); if (callee != null) result += callee.hashCode(); result += bcIndex;
int result = bcIndex; result += caller.hashCode(); result += callee.hashCode();
  public int hashCode() {    int result = 7;    if (caller != null) result += caller.hashCode();    if (callee != null) result += callee.hashCode();    result += bcIndex;    return result;  }