usestd::io;useimage::error::UnsupportedError;/// ImageError represents an error that occurs while processing an image.
#[derive(Debug)]pubenumImageError{/// An error was encountered when the parameter is invalid.
InvalidParameter,/// An error was encountered when the file format of the image is not supported.
UnsupportedFile(UnsupportedError),/// An error was encountered when the color type of the image is not supported.
UnsupportedType(image::ColorType),/// An error was encountered when an I/O error occurred.
IoError(io::Error),/// An error was encountered when processing the image due to an unknown error.
Unknown(image::ImageError),}