mod modA {
    mod modB {
        mod modC {
            mod modD {
                mod modE {
                    fn func() {
                        state . rule (Rule :: myrule , | state | { state . sequence (| state | { state . sequence (| state | { state . match_string ("abc") . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . match_string ("def") }) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . sequence (| state | { state . optional (| state | { state . sequence (| state | { state . match_string ("abc") . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . match_string ("def") }) }) . and_then (| state | { state . repeat (| state | { state . sequence (| state | { super :: hidden :: skip (state) . and_then (| state | { state . sequence (| state | { state . match_string ("abc") . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . match_string ("def") }) }) }) }) }) }) }) }) }) }) });
                    }
                }
            }
        }
    }
}