Struct DownloadInstanceInputOutputCallbacks

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pub struct DownloadInstanceInputOutputCallbacks {
    pub read: Option<Box<dyn FnMut(&mut [u8]) -> Option<usize>>>,
    pub write: Option<Box<dyn FnMut(&[u8]) -> usize>>,
    pub progress: Option<Box<dyn FnMut(usize, usize) -> bool>>,
}

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§read: Option<Box<dyn FnMut(&mut [u8]) -> Option<usize>>>§write: Option<Box<dyn FnMut(&[u8]) -> usize>>§progress: Option<Box<dyn FnMut(usize, usize) -> bool>>

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impl !UnwindSafe for DownloadInstanceInputOutputCallbacks

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