BindingGroup manages to simplify the process of binding many properties from a
Object as a group.
As such there is no API to unbind a property from the group.
In particular, this allows you to change the source instance for the bindings. This automatically causes the unbinding of the properties from
the old instance and binding to the new instance.
Creates a binding between source_property on the source object
and target_property on target, allowing you to set the transformation functions to be used by the binding.
Creates a binding between source_property on the source object
and target_property on target, allowing you to set the transformation functions to be used by the binding.