code: def peek(self, index=0):
      try:
          return self.buffer[self.pointer + index]
      except IndexError:
          self.update(index + 1)
          return self.buffer[self.pointer + index]
  
file_path: keepsake/python/keepsake/_vendor/yaml/reader.py
imports: from .error import YAMLError, Mark
  import codecs, re
label_desc: Use image node_id 2 for calling the Reader obj's underlying member method code with example usage: obj.peek(index) and returns: self, self