returns the unique identifier of the data source associated with the user account associated with the current session . concode_field_sep String authToken concode_elem_sep String dataSource concode_elem_sep List<String> availableDataSources concode_elem_sep String username concode_field_sep String getAuthToken concode_elem_sep List<String> getAvailableDataSources concode_elem_sep String getUsername
String function ( ) { return dataSource ; }