def can_overridecalculated_grade_entries(self):
raise errors.Unimplemented()<EOL>
Tests if this user can override grade entries calculated from another.

        A return of true does not guarantee successful authorization. A
        return of false indicates that it is known creating a grade
        entry will result in a ``PermissionDenied``. This is intended as
        a hint to an application that may opt not to offer create
        operations to an unauthorized user.

        return: (boolean) - ``false`` if ``GradeEntry`` override is not
                authorized, ``true`` otherwise
        *compliance: mandatory -- This method must be implemented.*