RFR: 8328821: Map.of().entrySet() mutators should throw UnsupportedOperationException

[Liam Miller-Cushon]

On Wed, 27 Mar 2024 17:36:28 GMT, Liam Miller-Cushon <cushon at openjdk.org> wrote:

> This change overrides mutator methods in the implementation returned by `Map.of().entrySet()` to throw `UnsupportedOperationException`.

Please keep this open

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PR Comment: https://git.openjdk.org/jdk/pull/18522#issuecomment-2079906047