parameters: (self, i, child)
docstring: Equivalent to 'node.children.insert(i, child)'. This method also sets
          the child's parent attribute appropriately.
docstring_summary: Equivalent to 'node.children.insert(i, child)'. This method also sets
          the child's parent attribute appropriately.
docstring_tokens: Equivalent to node . children . insert ( i child ) . This method also sets the child s parent attribute appropriately .
function: def insert_child(self, i, child):
          """
          Equivalent to 'node.children.insert(i, child)'. This method also sets
          the child's parent attribute appropriately.
          """
          child.parent = self
          self.children.insert(i, child)
          self.changed()
function_tokens: def insert_child ( self , i , child ) : child . parent = self self . children . insert ( i , child ) self . changed ( )