pub unsafe extern "C" fn BNProjectDeleteFolder(
project: *mut BNProject,
folder: *mut BNProjectFolder,
ctxt: *mut c_void,
progress: BNProgressFunction,
) -> bool
pub unsafe extern "C" fn BNProjectDeleteFolder(
project: *mut BNProject,
folder: *mut BNProjectFolder,
ctxt: *mut c_void,
progress: BNProgressFunction,
) -> bool