Retruns a dictionary of mappings and the fiels names in dot notation

        args:
            mappings: es mapping defitions to parse

def mapping_ref(self, es_mappings):
        """
        Retruns a dictionary of mappings and the fiels names in dot notation

        args:
            mappings: es mapping defitions to parse
        """

        new_map = {}
        for key, value in es_mappings.items():
            for sub_key, sub_value in value.items():
                new_map["/".join([key, sub_key])] = \
                        mapping_fields(sub_value['properties'])
        return new_map