bson_append_symbol man page
bson_append_symbol — bson_append_symbol()
bool bson_append_symbol (bson_t *bson, const char *key, int key_length, const char *value, int length);
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().
value: The symbol.
length: A length of symbol in bytes, or -1 to determine the length with strlen().
Appends a new field to bson of type BSON_TYPE_SYMBOL. This BSON type is deprecated and should not be used in new code.
true if the operation was applied successfully, otherwise false and bson should be discarded.
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