# bson_append_iter()

## Synopsis

    bool
    bson_append_iter (bson_t            *bson,
                      const char        *key,
                      int                key_length,
                      const bson_iter_t *iter);

## Parameters

bson | A bson_t.
key | An ASCII C string containing the name of the field.
key_length | The length of key in bytes, or -1 to determine the length with strlen().
iter | A bson_iter_t.

## Description

TODO:

## Returns

TODO: