JetBrains.EnvDTE.Client by JetBrains

<PackageReference Include="JetBrains.EnvDTE.Client" Version="20220221.47.0" />

 FileCodeModelImpl

public sealed class FileCodeModelImpl : FileCodeModel2, FileCodeModel
public CodeElements CodeElements { get; }

public DTE DTE { get; }

public bool IsBatchOpen { get; }

public string Language { get; }

public ProjectItem Parent { get; }

public vsCMParseStatus ParseStatus { get; }

public CodeImport AddImport(string Name, object Position, string Alias = "")

public void BeginBatch()

public CodeElement ElementFromID(string ID)

public void EndBatch()

public void Synchronize()