Function ODNodeCustomFunction 

pub unsafe extern "C-unwind" fn ODNodeCustomFunction(
    node: &ODNodeRef,
    function: Option<&CFString>,
    payload: Option<&CFType>,
    error: *mut *mut CFError,
) -> Option<CFRetained<CFType>>

👎Deprecated: renamed to ODNodeRef::custom_function

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