find_property_name
Description:
Returns property's GLib.ParamSpec based on given nick, without '::' This function is case insensitive.
By default any property to be serialized, should set its nick with a prefix '::', while this method requires to avoid '::' for property's name to find. '::' will not be present on serialization output, so you can use any convention for your attribute's name, like using camel case.