extjs grid real full afterrender event?
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i am having extjs GridPanel

when i load store:

    I do Ext.getBody().mask();

    Grid 'afterrender' event fires first

    Store 'load' event fires second

    I attached unmask function to  store load 'event'

but there are few moments after that event, 
when i see white grid (between unmask and  rows populating).

what is ther proper way to unmask on real full afterrender event?
i mean - when all rows are rendered.

Thanks

