@Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (getClass() != obj.getClass()) {
			return false;
		}
		Usuario other = (Usuario) obj;
		if (id == null) {
			if (other.id != null) {
				return false;
			}
		} else if (!id.equals(other.id)) {
			return false;
		}
		if (username == null) {
			if (other.username != null) {
				return false;
			}
		} else if (!username.equals(other.username)) {
			return false;
		}
		return true;
	}