originExecutionCourse.removeAssociatedCurricularCourses(curricularCourse);
    private void transferCurricularCourses(final ExecutionCourse originExecutionCourse, final ExecutionCourse destinationExecutionCourse,             final Integer[] curricularCourseIdsToTransfer) {        for (final Integer curricularCourseID : curricularCourseIdsToTransfer) {            final CurricularCourse curricularCourse = (CurricularCourse) findDomainObjectByID(                    originExecutionCourse.getAssociatedCurricularCourses(), curricularCourseID);            destinationExecutionCourse.addAssociatedCurricularCourses(curricularCourse);            originExecutionCourse.removeAssociatedCurricularCourses(curricularCourse);        }    }