@Override
		public int hashCode() {
			final int PRIME = 31;
			int result = 1;
			result = PRIME * result + ((firstName == null) ? 0 : firstName.hashCode());
			result = PRIME * result + ((id == null) ? 0 : id.hashCode());
			result = PRIME * result + ((lastName == null) ? 0 : lastName.hashCode());
			return result;
		}