<PackageReference Include="Microsoft.CSharp" Version="4.6.0-preview9.19421.4" />

Microsoft.CSharp.RuntimeBinder.Semantics.OutputContext

namespace Microsoft.CSharp.RuntimeBinder.Semantics { internal class OutputContext { public LocalVariableSymbol m_pThisPointer; public MethodSymbol m_pCurrentMethodSymbol; public bool m_bUnsafeErrorGiven; public OutputContext(); } }