Chapter 17.3: Listing 17-17: Unnecessary &self used in function call

[UnHumbleBen]

In the implementation of the content() method for the Post struct,

    pub fn content(&self) -> &str {
        self.state.as_ref().unwrap().content(&self)
    }

can be replaced with

    pub fn content(&self) -> &str {
        self.state.as_ref().unwrap().content(self)
    }

removing the "&" inside of the arguments for the call to the content() method.
I believe this clarifies the code because self is already a reference, so it is awkward to use deref coercion here.