monoandroid 
namespace Microsoft.CodeAnalysis.CSharp.Syntax
{
    public sealed class UndefDirectiveTriviaSyntax : DirectiveTriviaSyntax
    {
        public override bool IsActive { get; }
    }
}
.NET 5.06.07.08.09.010.0
.NET Core 2.02.12.23.03.1
.NET Framework 4.6.14.6.24.74.7.14.7.24.84.8.1
.NET Standard 2.02.1
Information specific to monoandroid
Assembly

Microsoft.CodeAnalysis.CSharp , Version=4.13.0.0, PublicKeyToken=31bf3856ad364e35

Referencing

Your project needs a package reference to Microsoft.CodeAnalysis.CSharp.

Package Microsoft.CodeAnalysis.CSharp (4.13.0) netstandard2.0
Platform Restrictions

This framework does not have platform annotations.

  • Built-in API
  • Package-provided API