findProperty
Looks up the #GParamSpec for a property of a class.
Return
the #GParamSpec for the property, or null if the class doesn't have a property of that name
Parameters
propertyName
the name of the property to look up
Looks up the #GParamSpec for a property of a class.
the #GParamSpec for the property, or null if the class doesn't have a property of that name
the name of the property to look up