code: def update_raw(self, size=4096):
      data = self.stream.read(size)
      if self.raw_buffer is None:
          self.raw_buffer = data
      else:
          self.raw_buffer += data
      self.stream_pointer += len(data)
      if not data:
          self.eof = True
  
file_path: catboost/contrib/python/PyYAML/py3/yaml/reader.py
imports: from .error import YAMLError, Mark
  import codecs, re
label_desc: Use image node_id 9 for calling the Reader obj's underlying member method code with example usage: obj.update_raw(size) without return types