Return a BandStructureSymmLine object interpolating bands along a
        High symmetry path calculated from the structure using HighSymmKpath function

def get_band_structure(self):
        """Return a BandStructureSymmLine object interpolating bands along a
        High symmetry path calculated from the structure using HighSymmKpath function"""

        kpath = HighSymmKpath(self.data.structure)
        kpt_line = [Kpoint(k, self.data.structure.lattice) for k
                    in
                    kpath.get_kpoints(coords_are_cartesian=False)[
                        0]]
        kpoints = np.array(
            [kp.frac_coords for kp in kpt_line])

        labels_dict = {l: k for k, l in zip(
            *kpath.get_kpoints(coords_are_cartesian=False)) if l}

        lattvec = self.data.get_lattvec()
        egrid, vgrid = fite.getBands(kpoints, self.equivalences, lattvec, self.coeffs)

        bands_dict = {Spin.up: (egrid / units.eV)}

        sbs = BandStructureSymmLine(kpoints, bands_dict,
                                    self.data.structure.lattice.reciprocal_lattice,
                                    self.efermi / units.eV,
                                    labels_dict=labels_dict)
        return sbs