Returns dict which contains Slab Entry data.

def as_dict(self):
        """
        Returns dict which contains Slab Entry data.
        """

        d = {"@module": self.__class__.__module__,
             "@class": self.__class__.__name__}
        d["structure"] = self.structure
        d["energy"] = self.energy
        d["miller_index"] = self.miller_index
        d["label"] = self.label
        d["coverage"] = self.coverage
        d["adsorbates"] = self.adsorbates
        d["clean_entry"] = self.clean_entry

        return d