return result.size(); }
	private int countNumberOfDistinctExecutionCoursesOfShiftsFor(final ExecutionPeriod executionPeriod) {		final Set<ExecutionCourse> result = new HashSet<ExecutionCourse>();		for (final Shift shift : getShiftsSet()) {			if (shift.getDisciplinaExecucao().getExecutionPeriod() == executionPeriod) {				result.add(shift.getDisciplinaExecucao());			}		}		return result.size();	}