old_contents: from AbstractVisitor import AbstractVisitor
  
  from duralex.alinea_parser import *
  
  import duralex.node_type
  
  class ForkReferenceVisitor(AbstractVisitor):
      def visit_node(self, node):
          if duralex.tree.is_reference(node) and 'children' in node and len(node['children']) > 1:
              ref_nodes = filter(lambda n: duralex.tree.is_reference(n), node['children'])
              for i in range(1, len(ref_nodes)):
                  ref = ref_nodes[i]
                  fork = copy_node(node, recursive=False)
                  remove_node(node, ref)
                  push_node(fork, ref)
                  push_node(node['parent'], fork)
  
          super(ForkReferenceVisitor, self).visit_node(node)
  
new_contents: from AbstractVisitor import AbstractVisitor
  
  from duralex.alinea_parser import *
  
  import duralex.tree
  
  class ForkReferenceVisitor(AbstractVisitor):
      def visit_node(self, node):
          if duralex.tree.is_reference(node) and 'children' in node and len(node['children']) > 1:
              ref_nodes = filter(lambda n: duralex.tree.is_reference(n), node['children'])
              for i in range(1, len(ref_nodes)):
                  ref = ref_nodes[i]
                  fork = copy_node(node, recursive=False)
                  remove_node(node, ref)
                  push_node(fork, ref)
                  push_node(node['parent'], fork)
  
          super(ForkReferenceVisitor, self).visit_node(node)
  
subject: Fix broken reference to node_type.