Justin Edelson created SLING-3909:
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             Summary: Merged ResourceProviders should be optionally modifiable
                 Key: SLING-3909
                 URL: https://issues.apache.org/jira/browse/SLING-3909
             Project: Sling
          Issue Type: Improvement
          Components: Extensions
            Reporter: Justin Edelson


This is a continuation of the work originally started in SLING-3420.

Modification are always done on the "most significant" resource (i.e. /apps/foo 
instead of /libs/foo) as determined by the MergedResourcePicker.

The algorithm for modification is as follows:

* Create - if the most significant resource doesn't exist, one is created at 
that path; otherwise an exception is thrown.
* Delete - if the most significat resource doesn't exist, the hide children 
property is set on the most signfiicant resource's parent. if it does exist, it 
is deleted and the hide children property is set.
* Property Modifications - most significant resource is created as necessary.
** Create - created on most significant resource
** Modify - created/updated on most significant resource
** Delete - deleted if necessary on most significant resource and hidden.



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