Document IDISP004 behavior in more detail

Would it be possible to document the behavior of IDISP004: Don't ignore created IDisposable in more detail?
The code looks like it considers a lot of cases, but maybe there is some way to explain the behavior in a close enough way?

IDisposableAnalyzers/IDisposableAnalyzers/Helpers/Disposable.IsCreation.cs

Line 130 in aa7eaff

    
           internal static bool IsCreation(ExpressionSyntax candidate, SemanticModel semanticModel, CancellationToken cancellationToken)

Specifically, how does it differ from https://docs.microsoft.com/en-us/dotnet/fundamentals/code-analysis/quality-rules/ca2000?