impl Foo {
    /// Constructs a new `Foo`.
    ///
    /// # Examples
    ///
    /// ```
    /// # #![allow(unused_mut)]
    /// let mut foo: Foo = Foo::new();
    /// ```
    pub const fn new() -> Foo {
        Foo { }
    }

    /// `bar` method on `Foo`.
    ///
    /// # Examples
    ///
    /// ```
    /// let foo = Foo::new();
    ///
    /// // calls bar on foo
    /// assert!(foo.bar());
    ///
    /// /* multi-line
    ///        comment */
    ///
    /// let multi_line_string = "Foo
    ///   bar
    ///          ";
    ///
    /// ```
    ///
    /// ```
    /// let foobar = Foo::new().bar();
    /// ```
    pub fn foo(&self) -> bool {
        true
    }
}