typedef void (*CGBitmapContextReleaseDataCallback)(void * __nullable releaseInfo,
    void * __nullable data);

CG_EXTERN CGContextRef __nullable CGBitmapContextCreateWithData(
    void * __nullable data, size_t width, size_t height, size_t bitsPerComponent,
    size_t bytesPerRow, CGColorSpaceRef cg_nullable space, uint32_t bitmapInfo,
    CGBitmapContextReleaseDataCallback __nullable releaseCallback,
    void * __nullable releaseInfo)
    CG_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_4_0);

CG_EXTERN CGContextRef __nullable CGBitmapContextCreate(void * __nullable data,
    size_t width, size_t height, size_t bitsPerComponent, size_t bytesPerRow,
    CGColorSpaceRef cg_nullable space, uint32_t bitmapInfo)
    CG_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0);

CG_EXTERN void * __nullable CGBitmapContextGetData(CGContextRef cg_nullable context)
    CG_AVAILABLE_STARTING(__MAC_10_2, __IPHONE_2_0);

CG_EXTERN size_t CGBitmapContextGetWidth(CGContextRef cg_nullable context)
    CG_AVAILABLE_STARTING(__MAC_10_2, __IPHONE_2_0);

CG_EXTERN size_t CGBitmapContextGetHeight(CGContextRef cg_nullable context)
    CG_AVAILABLE_STARTING(__MAC_10_2, __IPHONE_2_0);

CG_EXTERN size_t CGBitmapContextGetBitsPerComponent(CGContextRef cg_nullable context)
    CG_AVAILABLE_STARTING(__MAC_10_2, __IPHONE_2_0);

CG_EXTERN size_t CGBitmapContextGetBitsPerPixel(CGContextRef cg_nullable context)
    CG_AVAILABLE_STARTING(__MAC_10_2, __IPHONE_2_0);

CG_EXTERN size_t CGBitmapContextGetBytesPerRow(CGContextRef cg_nullable context)
    CG_AVAILABLE_STARTING(__MAC_10_2, __IPHONE_2_0);

CG_EXTERN CGColorSpaceRef __nullable CGBitmapContextGetColorSpace(
    CGContextRef cg_nullable context)
    CG_AVAILABLE_STARTING(__MAC_10_2, __IPHONE_2_0);

CG_EXTERN CGImageAlphaInfo CGBitmapContextGetAlphaInfo(
    CGContextRef cg_nullable context)
    CG_AVAILABLE_STARTING(__MAC_10_2, __IPHONE_2_0);

CG_EXTERN CGBitmapInfo CGBitmapContextGetBitmapInfo(
    CGContextRef cg_nullable context)
    CG_AVAILABLE_STARTING(__MAC_10_4, __IPHONE_2_0);

CG_EXTERN CGImageRef __nullable CGBitmapContextCreateImage(
    CGContextRef cg_nullable context)
    CG_AVAILABLE_STARTING(__MAC_10_4, __IPHONE_2_0);