How to avoid warnings when calling super.attached() in polymer behavior

Issue

I find out that I need to call super.attached() inside polymer behaviors (documentation remains silent about that). When I do this the WebStorm shows me the warning method 'attached' is not defined in superclass. My behavior implements only PolymerBase but lifecycle callbacks are not defined there. How to avoid the warning?

Solution

attached() is from the Element class in dart:html, just add it to the implements clause.

Answered By – Günter Zöchbauer

Answer Checked By – Timothy Miller (FlutterFixes Admin)

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