lib/active_record_survey/node_map.rb
def children_until_node_not_ancestor_of(klass)
			if !self.node.class.ancestors.include?(klass)
				return []
			end

			[self] + self.children.collect { |i|
				i.children_until_node_not_ancestor_of(klass)
			}
		end
def children_until_node_not_ancestor_of(klass)
			if !self.node.class.ancestors.include?(klass)
				return []
			end

			[self] + self.children.collect { |i|
				i.children_until_node_not_ancestor_of(klass)
			}
		end
Gets all the child nodes until one is not an ancestor of klass