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This does essentially the same thing, but uses event retargetting to simulate event.target under shadow DOM. This acts the same as currentTarget because the node is always in the same scope as the node where the listener was added. This is polyfilled to work in older browsers than e.currentTarget and is less likely to have issues with shadow DOM. https://www.polymer-project.org/1.0/docs/devguide/events#retargeting Change-Id: I6fe5afdfddfdc3e21fbca10aef260cac704bea3d