aspnetcore/test/Microsoft.AspNetCore.DataProtection.Test.Shared/project.json

{
  "frameworks": {
    "netstandard1.1": {
      "dependencies": {
        "System.Runtime": "4.1.0-*"
      },
      "imports": [
        "dotnet5.2"
      ]
    }
  },
  "shared": "**/*.cs"
}