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# syn_codegen
This is an internal (not published on crates.io) crate which is used to generate
the files in the `gen/` directory of `syn`. It is used to ensure that the
implementations for `Fold`, `Visit`, and `VisitMut` remain in sync with the
actual AST.
To run this program, run `cargo run` in this directory, and the `gen/` folder
will be re-generated.
This program is slow, and is therefore not run when building `syn` as part of
the build script to save on compile time.
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