parameters: (self, item)
docstring: Collapse the given item and deletes its children.
  
          :param `item`: an instance of :class:`GenericTreeItem`.
docstring_summary: Collapse the given item and deletes its children.
docstring_tokens: Collapse the given item and deletes its children .
function: def CollapseAndReset(self, item):
          """
          Collapse the given item and deletes its children.
  
          :param `item`: an instance of :class:`GenericTreeItem`.
          """
  
          self.Collapse(item)
          self.DeleteChildren(item)
function_tokens: def CollapseAndReset ( self , item ) : self . Collapse ( item ) self . DeleteChildren ( item )