Marshall Schor commented on UIMA-5115:

I agree 1 is not desirable.  At the very least, the fact that an "at(0,2)" 
clause is included implies this is over Annotations, so that would be the 
return type I would hope, of get.

But I think the way this happens is via (2), where it gets the type inferred 
from the receiving variable.

Choice 3) seems not too useful - it adds a check but it seems it just forces 
the user to write the type twice - once as the receiving argument, and once as 
the extra argument to the select.

> uv3 select() api for iterators and streams over CAS contents
> ------------------------------------------------------------
>                 Key: UIMA-5115
>                 URL: https://issues.apache.org/jira/browse/UIMA-5115
>             Project: UIMA
>          Issue Type: New Feature
>          Components: Core Java Framework
>            Reporter: Marshall Schor
>            Priority: Minor
>             Fix For: 3.0.0SDKexp
> Design and implement a select() API based on uimaFIT's select, integrated 
> well with Java 8 concepts.  Initial discussions in UIMA-1524.  Wiki with 
> diagram: https://cwiki.apache.org/confluence/display/UIMA/UV3+Iterator+support

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