@Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}
		if (!super.equals(obj)) {
			return false;
		}
		if (!(obj instanceof TraderImpl)) {
			return false;
		}
		TraderImpl other = (TraderImpl) obj;
		if (login == null) {
			if (other.login != null) {
				return false;
			}
		} else if (!login.equals(other.login)) {
			return false;
		}
		return true;
	}