2 question about UA driver

1.Is com.inductiveautomation.opcua.nodes.NodeManager and com.inductiveautomation.opcua.nodes.builders.NodeBuilderFactory included in your javadoc,if not ,please give me some explaination about these class.
2.when are "List<? extends ReadItem> " in the param of function “createReadRequest” and “optimizeRead” created,are they created according to the node build in function
“buildNode”
Thank you very much.