39   bool operator==(const Span& right) const {
85     Ref& operator=(const Ref& rhs);  variable
86     bool operator==(const Ref& rhs) const;
87     bool operator!=(const Ref& rhs) const;
88     const std::string* operator->() const;
89     const std::string& operator*() const;
110     StyleRef& operator=(const StyleRef& rhs);  variable
111     bool operator==(const StyleRef& rhs) const;
112     bool operator!=(const StyleRef& rhs) const;
113     const StyleEntry* operator->() const;
114     const StyleEntry& operator*() const;
166   StringPool& operator=(StringPool&&) = default;  variable