Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/setup-dotnet@v2, kzrnm/get-net-sdk-project-versions-action@v1. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

.NET Core 3.1 is no longer supported and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the .NET support policy.

.NET 5.0 is no longer supported and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the .NET support policy.

Possible null reference return.

'ChemSharp.Molecules.Generator.MoleculeCreateGenerator': A project containing analyzers or source generators should specify the property '<EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>'

'ChemSharp.Molecules.Generator.FileFormatReadGenerator': A project containing analyzers or source generators should specify the property '<EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>'

'ChemSharp.Molecules.Generator.ElementProviderGenerator': A project containing analyzers or source generators should specify the property '<EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>'

'ChemSharp.Generator.MathFGenerator': A project containing analyzers or source generators should specify the property '<EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>'

Possible null reference return.

Nullability of type of parameter 'obj' doesn't match overridden member (possibly because of nullability attributes).

The type 'TKey' cannot be used as type parameter 'TKey' in the generic type or method 'Dictionary<TKey, TValue>'. Nullability of type argument 'TKey' doesn't match 'notnull' constraint.

Possible null reference return.