class RuboCop::AST::Node

part of it is changed.
identical subtrees. Rather, the entire AST must be copied any time any
not just the other way around, we cannot update an AST and share
mutate our ASTs. Since we keep references from children to parents and
Override `AST::Node#updated` so that `AST::Processor` does not try to

def updated(type = nil, children = nil, properties = {})
  properties[:location] ||= @location
  klass = RuboCop::AST::Builder::NODE_MAP[type || @type] || Node
  klass.new(type || @type, children || @children, properties)
end