getAll(property, value, startIndex, endIndex) → {any}
Returns all children in this Group. You can optionally specify a matching criteria using the property and value arguments. For example: getAll('exists', true) would return only children that have their exists property set. Optionally you can specify a start and end index. For example if this Group had 100 children,and you set startIndex to 0 and endIndex to 50, it would return a random child from onlythe first 50 children in the Group.
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