def validate_overlap(self,force):
        """Validate that spectrum and bandpass overlap.
        Warnings are stored in ``self.warnings``.

        Parameters
        ----------
        force : {'extrap', 'taper', `None`}
            If `None`, it is required that the spectrum and bandpass fully
            overlap. Partial overlap is allowed if this is set to
            ``'extrap'`` or ``'taper'``. See :func:`validate_overlap`.

        """

        #Wrap the function for convenience
        self.spectrum, self.bandpass, warn = validate_overlap(self.spectrum,
                                                              self.bandpass, force)
        self.warnings.update(warn)