/// <summary>
/// Initializes a new instance of the <see cref="CompilationWithImportedTypes"/>
/// </summary>
/// <param name="compilation"><see cref="CSharpCompilation"/> to get the <see cref="INamedTypeSymbol"/>s from.</param>
/// <exception cref="ArgumentNullException"><paramref name="compilation"/> is <see langword="null"/>.</exception>
public CompilationWithImportedTypes(CSharpCompilation compilation) : base(compilation)
{
_allTypes = TypeIdentity.GetAllTypes().ToArray();
_entries = new(_allTypes.Length);
Reset();
}