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When the Tokenloader is unable to find tokens for a push query the following is logged:
Check your push query: Not a single token was loaded from the DB!
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Now, with GCM-3 topics, the logic is the following:
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we auto register the devices for a global topic (e.g. /topics/variantID)
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if there is send a push w/o any other criteria, the UPS sends a message to that topic
However since only new InstanceID tokens (prefix:somethingThatLooksLikeAnLegacyToken) are able to join a topic, we need to find all legacy tokens (not containing a  , for those we also perfom a send, in the traditional way, by regitrationID/token
Now, in a case were the variant does only have new tokens and no legacy tokens, the same warning is printed, which is missleading.
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