class Nokogiri::XML::Node

def children=(node_or_tags)

Also see related method +inner_html=+

containing markup.
+node_or_tags+ can be a Nokogiri::XML::Node, a Nokogiri::XML::DocumentFragment, or a String

Set the content for this Node +node_or_tags+
### 
def children=(node_or_tags)
  node_or_tags = coerce(node_or_tags)
  children.unlink
  if node_or_tags.is_a?(XML::NodeSet)
    node_or_tags.each { |n| add_child_node_and_reparent_attrs(n) }
  else
    add_child_node_and_reparent_attrs(node_or_tags)
  end
end