Merge pull request #3813 from limebell/feature/nullable-votepower · limebell/libplanet@c9ace8f

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/setup-dotnet@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

Possible null reference argument for parameter 'value' in 'void Dictionary<string, object>.Add(string key, object value)'.

'public' members should come before 'private' members

'public' members should come before 'private' members

'public' members should come before 'private' members

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

Possible null reference argument for parameter 'value' in 'void Dictionary<string, object>.Add(string key, object value)'.

'public' members should come before 'private' members

'public' members should come before 'private' members

'public' members should come before 'private' members

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