Commit 777aee0

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error: add convenient factory method to_err_without_payload

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Original file line number	Diff line number	Diff line change
`@@ -54,5 +54,19 @@ impl<Data: Debug> Display for Error<Data> {`
`54`	`54`	`}`
`55`	`55`	`}`
`56`	`56`
	`57`	`+impl<Data: Debug> Error<Data> {`
	`58`	+ /// Transforms the generic payload of an error to `()`. This is useful if
	`59`	`+ /// you want`
	`60`	`+ /// - to retain the erroneous status code,`
	`61`	`+ /// - do not care about the payload, and`
	`62`	`+ /// - refrain from generic type complexity in a higher API level.`
	`63`	`+ pub fn to_err_without_payload(&self) -> Error<()> {`
	`64`	`+ Error {`
	`65`	`+ status: self.status,`
	`66`	`+ data: (),`
	`67`	`+ }`
	`68`	`+ }`
	`69`	`+}`
	`70`	`+`
`57`	`71`	`#[cfg(feature = "unstable")]`
`58`	`72`	`impl<Data: Debug> core::error::Error for Error<Data> {}`

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