class_docstr: Common processor interface
class_docstr_tok: ["Common","processor","interface"]
docstr: Number of channels in the data returned by process(). May be different from
  the number of channels passed to setup()
code: def channels(self):
      """Number of channels in the data returned by process(). May be different from
      the number of channels passed to setup()"""
  
imports: from __future__ import absolute_import
  from .component import Interface
label_desc: Use image node_id 3 for calling the IProcessor obj's underlying member method code with example usage: obj.channels() without return types