r#"onStateChanged1:
        extern "C" fn(a0: i32, a1: ::std::os::raw::c_char, _: *const ::std::os::raw::c_void) -> (),"#;

r#"onStateChanged2: extern "C" fn(
        a0: ::std::os::raw::c_char,
        a1: f64,
        _: *const ::std::os::raw::c_void,
    ) -> ::std::os::raw::c_char,"#;