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