code: def read_var_bytes(self, max_size=sys.maxsize) -> bytes:
          
          length = self.read_var_int(max_size)
          return self.read_bytes(length)
docs: Read a variable length of bytes from the stream.
  
          Args:
              max_size (int): (Optional) maximum number of bytes to read.
  
          Returns:
              bytes: