@Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((codigo == null) ? 0 : codigo.hashCode()); result = prime * result + ((etaVolume == null) ? 0 : etaVolume.hashCode()); result = prime * result + ((medidorSaida == null) ? 0 : medidorSaida.hashCode()); result = prime * result + ((tipomedicao == null) ? 0 : tipomedicao.hashCode()); result = prime * result + ((valorMedicaoSaida == null) ? 0 : valorMedicaoSaida.hashCode()); result = prime * result + ((valorMedicaoSaidaAux == null) ? 0 : valorMedicaoSaidaAux.hashCode()); return result; }