Currently, to get a property from the object, you have to do the following:

T property_value; // declare object of property value type
obj->get_property("name", property_value); // get property value

However, it's very inconvenient, especially when you want to pass the value as an argument to a function.

I'm proposing the following API:

template<typename T>
T get_property(const Glib::ustring &property_name);

So we can easily get and use the property directly:

foo(obj->get_property<int>("name"));

I know that usually people should use property_*() API, but it's not a case in gstreamermm, where we can operate with dynamic elements.

If you don't want to add one more method to the Glib::ObjectBase, I'll do it only for Gst* classes, however, I think it's nice-to-have API in general.