#define BSON_APPEND_DBPOINTER(b, key, coll, oid) \

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                          BSON_APPEND_DBPOINTER(3)

WARNING:
          The dbpointer field type is DEPRECATED and should only be used when interacting with legacy systems.

       • 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().

       • collection: The target collection name.

       • oid: The target document identifier.

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

          #define BSON_APPEND_DBPOINTER(b, key, coll, oid) \
             bson_append_dbpointer (b, key, (int) strlen (key), coll, oid)

          bool
          bson_append_dbpointer (bson_t *bson,
                                 const char *key,
                                 int key_length,
                                 const char *collection,
                                 const bson_oid_t *oid);