<PackageReference Include="System.Dynamic.Runtime" Version="4.0.11-beta-23409" />

DynamicAttribute

public sealed class DynamicAttribute : Attribute
Indicates that the use of Object on a member is meant to be treated as a dynamically dispatched type.
public IList<bool> TransformFlags { get; }

Specifies, in a prefix traversal of a type's construction, which Object occurrences are meant to be treated as a dynamically dispatched type.

Initializes a new instance of the DynamicAttribute class.

public DynamicAttribute(bool[] transformFlags)

Initializes a new instance of the DynamicAttribute class.