@Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final Transicao other = (Transicao) obj;
        if (this.simbolo != other.simbolo && (this.simbolo == null || !this.simbolo.equals(other.simbolo))) {
            return false;
        }
        if (this.estadoDestino != other.estadoDestino && (this.estadoDestino == null || !this.estadoDestino.equals(other.estadoDestino))) {
            return false;
        }
        return true;
    }