def channels(self, use_cached=False, **params_to_override):
return collections.OrderedDict({ '<STR_LIT:default>':self.__call__(**params_to_override) })<EOL>
Channels() adds a shared interface for single channel and
multichannel structures.  It will always return an ordered
dict: its first element is the single channel of the pattern
(if single-channel) or the channel average (if multichannel);
the successive elements are the individual channels' arrays
(key: 0,1,..N-1).