Function s7_dilambda 

pub unsafe extern "C" fn s7_dilambda(
    sc: *mut s7_scheme,
    name: *const c_char,
    getter: Option<unsafe extern "C" fn(sc: *mut s7_scheme, args: s7_pointer) -> s7_pointer>,
    get_req_args: s7_int,
    get_opt_args: s7_int,
    setter: Option<unsafe extern "C" fn(sc: *mut s7_scheme, args: s7_pointer) -> s7_pointer>,
    set_req_args: s7_int,
    set_opt_args: s7_int,
    documentation: *const c_char,
) -> s7_pointer