pub unsafe extern "C" fn vips_executor_set_scanline(
executor: *mut VipsExecutor,
ir: *mut VipsRegion,
x: c_int,
y: c_int,
)pub unsafe extern "C" fn vips_executor_set_scanline(
executor: *mut VipsExecutor,
ir: *mut VipsRegion,
x: c_int,
y: c_int,
)