const CFAllocatorContext = extern struct
const CFAllocatorContext = extern struct { version: CFIndex, info: ?*anyopaque, retain: ?CFAllocatorRetainCallBack, release: ?CFAllocatorReleaseCallBack, copy_description: ?CFAllocatorCopyDescriptionCallBack, allocate: CFAllocatorAllocateCallBack, reallocate: ?CFAllocatorReallocateCallBack, deallocate: ?CFAllocatorDeallocateCallBack, preferred_size: ?CFAllocatorPreferredSizeCallBack, }