tree f090a2cc45e4a9fa4cfe6f6cb6d736a3e5571647
parent f38ee15286bd7e652d5dda360e06018ce9e8faf7
author Greg Spencer <gspencergoog@users.noreply.github.com> 1559241398 -0700
committer GitHub <noreply@github.com> 1559241398 -0700
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Add DiagnosticableMixin (#33595)

This adds DiagnosticableMixin as a mixin class that provides the implementaion for Diagnosticable, so that we can now add diagnostics to classes which already have a base class.