add_new_node_attribute

Description:

[ Version ( since = "4.2" ) ]
public void add_new_node_attribute (string attribute, Value? value)

Requests that for any new node managed (eg.

created) by this, a new attribute will be set. This allows one to customize the attributes of new nodes created by an existing TreeManager.

As a side effect, if value is null, then the corresponding attribute, if it was set, is unset.