pub fn return_type(&self, return_type: &Expected) -> Environment {
        Environment {
            return_type: Some(return_type.clone()),
            last_stmt_in_function: true,
            ..self.clone()
        }
    }
/// Specify the return type of function body.
Specify the return type of function body.
Specify the return type of function body .
pub fn return_type(&self, return_type: &Expected) -> Environment {
        Environment {
            return_type: Some(return_type.clone()),
            last_stmt_in_function: true,
            ..self.clone()
        }
    }
pub fn return_type ( & self , return_type : & Expected ) -> Environment { Environment { return_type : Some ( return_type . clone ( ) ) , last_stmt_in_function : true , .. self . clone ( ) } }
Specify the return type of function body.
Specify the return type of function body .
&self
return_type
&Expected