The polymer lint command displays warnings related to properties that are presents on mixin but no the element definition itself.
It means that polymer lint cannot inspect in-depth custom elements.
Why was this closed out? I'm experiencing this issue as well and wondering if you have a solution or proper way of including mixin to resolve lint issue.
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Why was this closed out? I'm experiencing this issue as well and wondering if you have a solution or proper way of including mixin to resolve lint issue.