def FREQ_COUNT(src_column):
    """
  Builtin frequency counts for groupby. Returns a dictionary where the key is
  the `src_column` and the value is the number of times each value occurs.

  >>> sf.groupby("user",
  ...       {'rating_distinct':gl.aggregate.FREQ_COUNT('rating')})

  """
    return '__builtin__freq_count__', [src_column]
