pub unsafe extern "C" fn MagickLevelImageColors(
arg1: *mut MagickWand,
arg2: *const PixelWand,
arg3: *const PixelWand,
arg4: MagickBooleanType,
) -> MagickBooleanType
pub unsafe extern "C" fn MagickLevelImageColors(
arg1: *mut MagickWand,
arg2: *const PixelWand,
arg3: *const PixelWand,
arg4: MagickBooleanType,
) -> MagickBooleanType