List<IExecutionYear> executionYears = readAllExecutionYear();
Collection<IExecutionYear> executionYears = readAll(ExecutionYear.class);
    public IExecutionYear readCurrentExecutionYear() throws ExcepcaoPersistencia {        List<IExecutionYear> executionYears = readAllExecutionYear();                for(IExecutionYear executionYear : executionYears){            if(executionYear.getState().equals(PeriodState.CURRENT))                return executionYear;        }                return null;    }