def METHOD_NAME(self):
    """
    Add shape constraints to the geometry parameterisation, if they exist.
    """
    n_shape_ineq_cons = self._parameterisation.n_ineq_constraints
    if n_shape_ineq_cons > 0:
        self.opt.add_ineq_constraints(
            self._parameterisation.shape_ineq_constraints,
            EPS * np.ones(n_shape_ineq_cons),
        )
    else:
        bluemira_warn(
            f"GeometryParameterisation {self._parameterisation.__class.__name__} does"
            "not have any shape constraints."
        )