This issue was originally filed by andrew.m...@gmail.com

Add EMPTY field in Symbol class, Symbol.EMPTY.

+++
class Symbol {
  static final Symbol EMPTY = const Symbol("");
}
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OR even so (if possible)

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class Symbol {
  static const Symbol EMPTY = const Symbol("");
}
+++

Usage:

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type.newInstance(Symbol.EMPTY, []);
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I think that it will not add a "large overhead" compared to this.

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type.newInstance(const Symbol(""), []);
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