83 struct Properties  struct
85     Properties() = delete;
86     ~Properties() = default;
87     Properties(const Properties&) = default;
88     Properties& operator=(const Properties&) = default;
89     Properties(Properties&&) = default;
90     Properties& operator=(Properties&&) = default;
91     explicit Properties(U&& handler) :  in Properties()  argument
94     Properties(const char* path, const char* intf, const char* prop,  in Properties()  argument
204     return Properties<T, U>(path, intf, prop, std::forward<U>(handler));  in propertiesChanged()
218     return Properties<T, U>(std::forward<U>(handler));  in getProperties()