def add_xtalographic_info(data_api, struct_inflator):
if data_api.unit_cell == None and data_api.space_group is not None:<EOL><INDENT>struct_inflator.set_xtal_info(data_api.space_group,<EOL>constants.UNKNOWN_UNIT_CELL)<EOL><DEDENT>elif data_api.unit_cell is not None and data_api.space_group is None:<EOL><INDENT>struct_inflator.set_xtal_info(constants.UNKNOWN_SPACE_GROUP,<EOL>data_api.unit_cell)<EOL><DEDENT>elif data_api.unit_cell is None and data_api.space_group is None:<EOL><INDENT>struct_inflator.set_xtal_info(constants.UNKNOWN_SPACE_GROUP,<EOL>constants.UNKNOWN_UNIT_CELL)<EOL><DEDENT>else:<EOL><INDENT>struct_inflator.set_xtal_info(data_api.space_group,<EOL>data_api.unit_cell)<EOL><DEDENT>
Add the crystallographic data to the structure.
         :param data_api the interface to the decoded data
         :param struct_inflator the interface to put the data into the client object