code: def __init__(self, deconame):
      from .plugins import FLOW_DECORATORS
  
      decos = ", ".join(t.name for t in FLOW_DECORATORS)
      msg = (
          "Unknown flow decorator *{deconame}*. The following decorators are "
          "supported: *{decos}*".format(deconame=deconame, decos=decos)
      )
      super(UnknownFlowDecoratorException, self).__init__(msg)
  
imports: from functools import partial
  import json
  import re
  import os
  import sys
  from .flowspec import FlowSpec
  from .exception import MetaflowInternalError, MetaflowException, InvalidDecoratorAttribute
  from metaflow._vendor import click
label_desc: Use image node_id 1 to create a new UnknownFlowDecoratorException object from inherited base classes: MetaflowException with example: obj = UnknownFlowDecoratorException(deconame)