Symbols are equal to other symbols that correspond to the same member name.
Qualified member names, like #foo.bar
are equal only if they have the same identifiers before the same final member name.
bool operator ==(other);
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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-core/Symbol/operator_equals.html