- name
- the name of the child preference to be returned.
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Returns the child preference node with the given name, creating it if it does not exist. The caller of this method should ensure that the given name is valid and that this node has not been removed or cached. If the named node has just been removed, the implementation of this method must create a new one instead of reactivating the removed one.
The new creation is not required to be persisted immediately until the flush method will be invoked.