Function OBEXAddDescriptionHeader 

pub unsafe extern "C-unwind" fn OBEXAddDescriptionHeader(
    description: Option<&CFString>,
    dict_ref: Option<&CFMutableDictionary>,
) -> OBEXError

Available on crate features OBEX and objc2-core-foundation only.

Add a CFStringRef to a dictionary of OBEXheaders.

Parameter description: Description you want to add to the OBEX header dictionary.

Parameter dictRef: dictionary you have allocated to hold the headers. Make sure it’s mutable.

Returns: Error code, kOBEXSuccess (0) if success.

Description header - OBEX Spec, 2.2.6: (2-byte) Null terminated unicode string.