return result; }
	public List<Shift> getShiftsFor(final ExecutionPeriod executionPeriod) {		final List<Shift> result = new ArrayList<Shift>();		for (final Shift shift : getShiftsSet()) {			if (shift.getDisciplinaExecucao().getExecutionPeriod() == executionPeriod) {				result.add(shift);			}		}		return result;	}