code: def IntToString(self, i):
      if i == self.bos_symbol:
          return "<s>"
      elif i == self.eos_symbol:
          return "</s>"
      else:
          assert i != self.backoff_symbol
          return str(i)
  
imports: import argparse
  import math
  import sys
  from collections import defaultdict
label_desc: Use image node_id 20 for calling the NgramCounts obj's underlying member method code with example usage: obj.IntToString(i) and returns: str, str, str