pub type PFN_FWDELETEDYNAMICKEYWORDADDRESS0 = Option<unsafe extern "system" fn(dynamickeywordaddressid: GUID) -> u32>;
enum PFN_FWDELETEDYNAMICKEYWORDADDRESS0 { None, Some(unsafe extern "system" fn(_: GUID) -> u32), }
No value.
Some value of type T.
T