code: def configure(cls, **kwargs):
          
  
          attrs = {}
          for key in ('prefix', 'handle_uniqueness', 'key'):
              if key in kwargs:
                  attrs[key] = kwargs.pop(key)
  
          if 'transform' in kwargs:
              attrs['transform'] = staticmethod(kwargs.pop('transform'))
  
          name = kwargs.pop('name', None)
  
          if kwargs:
              raise TypeError('%s.configure only accepts these named arguments: %s' % (
                  cls.__name__,
                  ', '.join(('prefix', 'transform', 'handle_uniqueness', 'key', 'name')),
              ))
  
          return type((str if PY3 else oldstr)(name or cls.__name__), (cls, ), attrs)
docs: Create a new index class with the given info
  
          This allow to avoid creating a new class when only few changes are
          to be made
  
          Parameters
          ----------
          kwargs: dict
              prefix: str
                  The string part to use in the collection, before the normal suffix.
                  For example `foo` to filter on `myfiled__foo__eq=`
                  This prefix will also be used by the indexes to store the data at
                  a different place than the same index without prefix.
              transform: callable
                  A function that will transform the value to be used as the reference
                  for the index, before the call to `normalize_value`.
                  If can be extraction of a date, or any computation.
                  The filter in the collection will then have to use a transformed value,
                  for example `birth_date__year=1976` if the transform take a date and
                  transform it to a year.
              handle_uniqueness: bool
                  To make the index handle or not the uniqueness
              key: str
                  To override the key used by the index. Two indexes for the same field of
                  the same type must not have the same key or data will be saved at the same place.
                  Note that the default key is None for `EqualIndex`, `text-range` for
                  `TextRangeIndex` and `number-range` for `NumberRangeIndex`
              name: str
                  The name of the new multi-index class. If not set, it will be the same
                  as the current class
  
          Returns
          -------
          type
              A new class based on `cls`, with the new attributes set