Facebook.Unity/UnityReferences/2018.xml (26 lines of code) (raw):
  <ItemGroup>
    <Reference Include="UnityEngine">
      <HintPath>$(UNITY_ENGINE_DIR)UnityEngine.dll</HintPath>
    </Reference>
    <Reference Include="UnityEngine.UI">
      <HintPath>$(UNITY_UI_DIR)UnityEngine.UI.dll</HintPath>
    </Reference>
    <Reference Include="UnityEngine.CoreModule">
        <HintPath>$(UNITY_ENGINE_DIR)UnityEngine.CoreModule.dll</HintPath>
    </Reference>
    <Reference Include="UnityEngine.UnityWebRequestModule">
        <HintPath>$(UNITY_ENGINE_DIR)UnityEngine.UnityWebRequestModule.dll</HintPath>
    </Reference>
    <Reference Include="UnityEngine.UnityWebRequestWWWModule">
        <HintPath>$(UNITY_ENGINE_DIR)UnityEngine.UnityWebRequestWWWModule.dll</HintPath>
    </Reference>
    <Reference Include="UnityEngine.IMGUIModule">
        <HintPath>$(UNITY_ENGINE_DIR)UnityEngine.IMGUIModule.dll</HintPath>
    </Reference>
    <Reference Include="UnityEngine.UIModule">
        <HintPath>$(UNITY_ENGINE_DIR)UnityEngine.UIModule.dll</HintPath>
    </Reference>
    <Reference Include="UnityEngine.ImageConversionModule">
        <HintPath>$(UNITY_ENGINE_DIR)UnityEngine.ImageConversionModule.dll</HintPath>
    </Reference>
  </ItemGroup>