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https://issues.apache.org/jira/browse/UIMA-2478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13703542#comment-13703542
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Marshall Schor commented on UIMA-2478:
--------------------------------------

I spoke with the originator, and he says:
1) He knew about getCurrentMark()
2) It was package-private, so would need to be made public for his use
3) He saw the inconsistency in havng the createMarker() be in the CAS 
interface, but this method not.
4) He envisioned a dream future where lists of markers would be supported, and 
wanted to move toward that.

Given this, (summarizing the discussion above:) and the fact that "Markers" 
were initially conceived as internal things, and the need for more thought on 
architecting a potential future user-facing set of APIs around user needs in 
this area (not internal needs), I'll revert this change and make the CASImpl 
method getCurrentMark() public; I'll leave the existing createMark in the CAS 
Interface to reduce "change" to that interface, pending some further work on 
improving this whole area.
                
> Add CAS interface method that allows user to obtain a list of Markers 
> associated with a given CAS
> -------------------------------------------------------------------------------------------------
>
>                 Key: UIMA-2478
>                 URL: https://issues.apache.org/jira/browse/UIMA-2478
>             Project: UIMA
>          Issue Type: New Feature
>            Reporter: Benjamin Segal
>         Attachments: UIMA-2478.bps.patch
>
>
> Add a convenience function that removes the need for applications that create 
> Markers for many CASes to separately manage them (e.g., map CAS to its 
> related Marker), and thereby simplify application code.
> Today's current level of support allows a user to create a Marker for a given 
> CAS (through the createMarker() method which is part of the CAS interface).
> This proposed support will allow the user to subsequently query a given CAS 
> and obtain a complete list of Markers created against this CAS. This function 
> is a natural extension to the given level of support (i.e., if one can create 
> Marker for a given CAS, one should be able to query the CAS to find said 
> Marker.)
> Having this support significant simplifies application code, offering 
> advantages from a memory overhead, performance, and maintainability 
> standpoint.  For example, the application won't need to build and maintain a 
> map of CASes to Markers, given the Marker is hanging off the CAS to begin 
> with.

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