Function extern_spec_std_option_T_Option_T_insert 

pub fn extern_spec_std_option_T_Option_T_insert<T>(
    self_: &mut Option<T>,
    value: T,
) -> &mut T

extern spec for ::std::option::Option<T>::insert

This is not a real function: its only use is for documentation.

terminates

ghost

ensures

match *self {
                    Some(t) => resolve(t),
                    None => true,
                }

ensures

*result == value && ^self == Some(^result)