code: def bounter(size_mb=None, need_iteration=True, need_counts=True, log_counting=None):
      
      if not need_counts:
          return CardinalityEstimator()
      if size_mb is None:
          raise ValueError("Max size in MB must be provided.")
      if need_iteration:
          if log_counting:
              raise ValueError("Log counting is only supported with CMS implementation (need_iteration=False).")
          return HashTable(size_mb=size_mb)
      else:
          return CountMinSketch(size_mb=size_mb, log_counting=log_counting)
docs: Factory method for bounter implementation.
  
      Args:
              size_mb (int): Desired memory footprint of the counter.
              need_iteration (Bool): With `True`, create a `HashTable` implementation which can
                  iterate over inserted key/value pairs.
                  With `False`, create a `CountMinSketch` implementation which performs better in limited-memory scenarios,
                  but does not support iteration over elements.
              need_counts (Bool): With `True`, construct the structure normally. With `False`, ignore all remaining
                  parameters and create a minimalistic cardinality counter based on hyperloglog which only takes 64KB memory.
              log_counting (int): Counting to use with `CountMinSketch` implementation. Accepted values are
                  `None` (default counting with 32-bit integers), 1024 (16-bit), 8 (8-bit).
                  See `CountMinSketch` documentation for details.
                  Raise ValueError if not `None `and `need_iteration` is `True`.