public interface PN extends IgnitePredicate<ClusterNode>
alias for GridPredicate<ClusterNode> by extending
IgnitePredicate. Since Java doesn't provide type aliases (like Scala, for example) we resort
to these types of measures. This is intended to provide for more concise code without sacrificing
readability. For more information see IgnitePredicate and ClusterNode.IgnitePredicate,
ClusterNode,
GridFuncapply
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Ignite Fabric : ver. 1.6.0 Release Date : May 18 2016