bson_writer_begin()
Synopsis
bool
bson_writer_begin (bson_writer_t *writer,
                   bson_t       **bson);Parameters
| writer | |
| bson | A bson_t. | 
Description
Begins writing a new document. The caller may use the bson structure to write out a new BSON document. When completed, the caller must call either bson_writer_end() or bson_writer_rollback().
Returns
true if there was space in the underlying buffers to begin the document.