docstr: get pretrain base model directory
docstr_tok: ["get","pretrain","base","model","directory"]
code: def pretrain_info(self):
      "get pretrain base model directory"
      return (None, None)
  
imports: import os
  import logging
  import paddle.fluid
label_desc: Use image node_id 12 for calling the ModelBase obj's underlying member method code with example usage: obj.pretrain_info() and returns: None,  None