Document that you should not instantiate an @Persist field in its declaration
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                 Key: TAPESTRY-2463
                 URL: https://issues.apache.org/jira/browse/TAPESTRY-2463
             Project: Tapestry
          Issue Type: Improvement
          Components: Documentation
    Affects Versions: 5.0
         Environment: N/A
            Reporter: Dave Dombrosky


Because of Tapestry's page pooling, persistent objects can behave in strange 
ways if not handled properly.  Issues can arise when setting a value on a 
persistent property at the same time as declaring it.

I ran into this issue while doing something similar to this: 
http://www.nabble.com/Strange-behavior-when-instantiating-properties-directly-in-the-page-p17876779.html

I propose that a note is added to the User's Guide -> Persistent Data page to 
warn users of this potential issue.

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