def __init__(self, channel_type):
'''
Initialize empty Channel Template with specific type
'''
ChannelType.__init__(self, channel_type)
ChannelStyle.__init__(self, channel_type)
Template.__init__(self)
self.__input_templates = [] # track added input templates
self.__input_template_types = set() # track added input template types
def __contains__(self, value):
return (ChannelType.__contains__(self, value) and
ChannelStyle.__contains__(self, value))
