ExecutionYear executionYear = ExecutionYear.readExecutionYearByName(year);  return getEnrolmentsByExecutionYear(executionYear);
return getEnrolmentsByExecutionYear(ExecutionYear.readExecutionYearByName(year));
    public List<Enrolment> getEnrolmentsByYear(String year) {        ExecutionYear executionYear = ExecutionYear.readExecutionYearByName(year);        return getEnrolmentsByExecutionYear(executionYear);    }