def build_first_question(question_node)
			if !question_node.class.ancestors.include?(::ActiveRecordSurvey::Node::Question)
				raise ArgumentError.new "must inherit from ::ActiveRecordSurvey::Node::Question"
			end

			question_node_maps = self.node_maps.select { |i| i.node == question_node && !i.marked_for_destruction? }

			# No node_maps exist yet from this question
			if question_node_maps.length === 0
				# Build our first node-map
				question_node_maps << self.node_maps.build(:node => question_node, :survey => self)
			end
		end
def build_first_question(question_node)
			if !question_node.class.ancestors.include?(::ActiveRecordSurvey::Node::Question)
				raise ArgumentError.new "must inherit from ::ActiveRecordSurvey::Node::Question"
			end

			question_node_maps = self.node_maps.select { |i| i.node == question_node && !i.marked_for_destruction? }

			# No node_maps exist yet from this question
			if question_node_maps.length === 0
				# Build our first node-map
				question_node_maps << self.node_maps.build(:node => question_node, :survey => self)
			end
		end
Builds first question