code: def _get_decision_tree(self, agent_id, timestamp, version):
      
      headers = self._headers.copy()
      headers["x-craft-ai-tree-version"] = version
      # If we give no timestamp the default behaviour is to give the tree from the latest timestamp
      if timestamp is None:
        req_url = "{}/agents/{}/decision/tree?".format(self._base_url, agent_id)
      else:
        req_url = "{}/agents/{}/decision/tree?t={}".format(self._base_url, agent_id, timestamp)
  
      resp = self._requests_session.get(req_url)
  
      decision_tree = self._decode_response(resp)
  
      return decision_tree
docs: Tool for the function get_decision_tree.
  
      :param str agent_id: the id of the agent to get the tree. It
      must be an str containing only characters in "a-zA-Z0-9_-" and
      must be between 1 and 36 characters.
      :param int timestamp: Optional. The decision tree is comptuted
      at this timestamp.
      :default timestamp: None, means that we get the tree computed
      with all its context history.
      :param version: version of the tree to get.
      :type version: str or int
      :default version: default version of the tree.
  
      :return: decision tree.
      :rtype: dict.