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@ -89,6 +89,11 @@ class ObservableDeferred(object):
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deferred.addCallbacks(callback, errback)
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def observe(self):
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"""Observe the underlying deferred.
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Can return either a deferred if the underlying deferred is still pending
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(or has failed), or the actual value. Callers may need to use maybeDeferred.
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"""
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if not self._result:
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d = defer.Deferred()
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