@Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((bugPattern == null) ? 0 : bugPattern.hashCode()); result = prime * result + ((bugPosition == null) ? 0 : bugPosition.hashCode()); result = prime * result + ((fixInformation == null) ? 0 : fixInformation.hashCode()); return result; }