usage: gofumpt [flags] [path ...]
	-version  show version and exit

	-d        display diffs instead of rewriting files
	-e        report all errors (not just the first 10 on different lines)
	-l        list files whose formatting differs from gofumpt's
	-w        write result to (source) file instead of stdout
	-extra    enable extra rules, e.g. -extra=group_params,clothe_returns

	-lang       str    target Go version in the form "go1.X" (default from go.mod)
	-modpath    str    Go module path containing the source file (default from go.mod)