def add_document(self, doc_id, nosave=False, score=<NUM_LIT:1.0>, payload=None,<EOL>replace=False, partial=False, language=None, **fields):
return self._add_document(doc_id, conn=None, nosave=nosave, score=score, <EOL>payload=payload, replace=replace,<EOL>partial=partial, language=language, **fields)<EOL>
Add a single document to the index.

### Parameters

- **doc_id**: the id of the saved document.
- **nosave**: if set to true, we just index the document, and don't save a copy of it. This means that searches will just return ids.
- **score**: the document ranking, between 0.0 and 1.0 
- **payload**: optional inner-index payload we can save for fast access in scoring functions
- **replace**: if True, and the document already is in the index, we perform an update and reindex the document
- **partial**: if True, the fields specified will be added to the existing document.
               This has the added benefit that any fields specified with `no_index`
               will not be reindexed again. Implies `replace`
- **language**: Specify the language used for document tokenization.
- **fields** kwargs dictionary of the document fields to be saved and/or indexed. 
             NOTE: Geo points shoule be encoded as strings of "lon,lat"