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:man_page: mongoc_gridfs_file_get_id
mongoc_gridfs_file_get_id()
===========================
Synopsis
--------
.. code-block:: c
const bson_value_t *
mongoc_gridfs_file_get_id (mongoc_gridfs_file_t *file);
Parameters
----------
* ``file``: A :symbol:`mongoc_gridfs_file_t`.
Description
-----------
Fetches the id of a gridfs file.
The C Driver always uses an ObjectId for ``_id``, but files created by other drivers may have any type of ``_id``.
Returns
-------
Returns a :symbol:`const bson_value_t * <bson:bson_value_t>` that should not be modified or freed.
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