Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v2, actions/setup-dotnet@v1, actions/setup-java@v1, actions/cache@v1, everpcpc/elasticsearch-action@v2. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/setup-dotnet@v1, actions/setup-java@v1, actions/cache@v1, everpcpc/elasticsearch-action@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

Do not forget to remove this deprecated code someday. (https://rules.sonarsource.com/csharp/RSPEC-1133)

Refactor 'Keys' into a method, properties should not copy collections. (https://rules.sonarsource.com/csharp/RSPEC-2365)

Refactor 'Values' into a method, properties should not copy collections. (https://rules.sonarsource.com/csharp/RSPEC-2365)

Make '_dicCache' 'readonly'. (https://rules.sonarsource.com/csharp/RSPEC-2933)

Fix this implementation of 'IDisposable' to conform to the dispose pattern. (https://rules.sonarsource.com/csharp/RSPEC-3881)

Do not forget to remove this deprecated code someday. (https://rules.sonarsource.com/csharp/RSPEC-1133)

Possible null reference argument for parameter 'left' in 'bool Enumeration.operator ==(Enumeration left, Enumeration right)'.

Cannot convert null literal to non-nullable reference type.

When implementing IComparable, you should also override <= and >=. (https://rules.sonarsource.com/csharp/RSPEC-1210)