code: def _set_min(self, val, step):
      if self.min_val is None or val < self.min_val:
          self.min_val = val
          self.min_step = step
  
imports: import logging
  import os
  import sqlite3
  from guild import run_util
  from guild import tfevent
  from guild import util
  from guild import var
label_desc: Use image node_id 5 for calling the TagSummary obj's underlying member method code with example usage: obj._set_min(val, step) without return types