<s> class Error ( Exception ) : <EOL> msg = '<STR_LIT>' <EOL> def __init__ ( self , msg = None ) : <EOL> self . msg = msg or self . msg <EOL> def __str__ ( self ) : <EOL> return self . msg <EOL> class NodeNotFound ( Error ) : <EOL> pass <EOL> class NodeExists ( Error ) : <EOL> pass <EOL> class NotSubscribed ( Error ) : <EOL> """<STR_LIT>""" <EOL> class SubscriptionExists ( Error ) : <EOL> """<STR_LIT>""" <EOL> class Forbidden ( Error ) : <EOL> pass <EOL> class ItemForbidden ( Error ) : <EOL> pass <EOL> class ItemRequired ( Error ) : <EOL> pass <EOL> class NoInstantNodes ( Error ) : <EOL> pass <EOL> class InvalidConfigurationOption ( Error ) : <EOL> msg = '<STR_LIT>' <EOL> class InvalidConfigurationValue ( Error ) : <EOL> msg = '<STR_LIT>' <EOL> class NodeNotPersistent ( Error ) : <EOL> pass <EOL> class NoRootNode ( Error ) : <EOL> pass <EOL> class NoCallbacks ( Error ) : <EOL> """<STR_LIT>""" <EOL> class NoCollections ( Error ) : <EOL> pass <EOL> class NoPublishing ( Error ) : <EOL> """<STR_LIT>""" </s>
