It is actually an error in the documentation, you should actually use the 
"id" in such cases.
Thanks for spotting it!


On Friday, 14 February 2020 20:12:23 UTC+1, Rob Gratz wrote:
>
>
> In the java driver documentation, all of the edge manipulation examples 
> reference "key" when describing the from/to endpoints.  I tried using the 
> _key value, assuming that is what "key" meant when setting up an edge but 
> would always get an error about the edge attribute(s) not being correct.  I 
> tried using the _id value in the edge definition and that worked.  So, is 
> the documentation incorrectly referencing "key" instead of "id" or is the 
> java driver not behaving correctly?
>

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