#define BSON_APPEND_CODE(b, key, val) \

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                               BSON_APPEND_CODE(3)

       The  bson_append_code()  function  shall  append a new element to bson using the UTF-8 encoded javascript
       provided. javascript must be a NULL terminated C string.

       • bson: A bson_t.

       • key: The key name.

       • key_length: The length of key or -1 to use strlen().

       • javascript: A UTF-8 encoded string containing the javascript.

       Returns true if the operation was applied successfully. The function will fail  if  appending  javascript
       grows bson larger than INT32_MAX.

          #define BSON_APPEND_CODE(b, key, val) \
             bson_append_code (b, key, (int) strlen (key), val)

          bool
          bson_append_code (bson_t *bson,
                            const char *key,
                            int key_length,
                            const char *javascript);