mongoc_stream_t * mongoc_stream_buffered_new (mongoc_stream_t *base_stream, size_t buffer_size) BSON_GNUC_WARN_UNUSED_RESULT;
base_stream: A mongoc_stream_t to buffer.
buffer_size: A size_t containing the desired buffer size.
This function shall create a new mongoc_stream_t that buffers bytes to and from the underlying
buffer_size will be used as the initial buffer size. It may grow past this size.