Checks whether the structure contains a given atom in a given environment
        :param atom_symbol: Symbol of the atom
        :param ce_symbol: Symbol of the coordination environment
        :return: True if the coordination environment is found, False otherwise

def structure_contains_atom_environment(self, atom_symbol, ce_symbol):
        """
        Checks whether the structure contains a given atom in a given environment
        :param atom_symbol: Symbol of the atom
        :param ce_symbol: Symbol of the coordination environment
        :return: True if the coordination environment is found, False otherwise
        """
        for isite, site in enumerate(self.structure):
            if (Element(atom_symbol) in site.species.
                    element_composition and self.site_contains_environment(isite, ce_symbol)):
                return True
        return False