Invokes

def from_dict(cls, d):
        """
        Invokes
        """
        entry_type = d["entry_type"]
        if entry_type == "Ion":
            entry = IonEntry.from_dict(d["entry"])
        else:
            entry = PDEntry.from_dict(d["entry"])
        entry_id = d["entry_id"]
        concentration = d["concentration"]
        return PourbaixEntry(entry, entry_id, concentration)