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…ocument derive Allows specifying a custom error type for the generated ParseDocument impl. The custom error type is used instead of ParseError for `type Error`. The custom type must implement `From<ParseError>` for `?` to work. This enables: - Combining multiple error sources with enum error types - Adding custom validation errors from nested ParseDocument impls - Using domain-specific error types throughout the parsing chain
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Allows specifying a custom error type for the generated ParseDocument impl.
The custom error type is used instead of ParseError for
type Error.The custom type must implement
From<ParseError>for?to work.This enables: