Oracle.ManagedDataAccess.Core - GetTypes 호출 시 "Could not load file or assembly 'System.DirectoryServices.Protocols...'" 오류

Oracle.ManagedDataAccess.Core 2.x 버전에서 GetTypes 메서드 또는 (내부에서 GetTypes 메서드를 호출하는) DefinedTypes 속성을 접근하면,

Assembly asm = typeof(OracleConnection).Assembly;
Type [] types = asm.GetTypes();

// 또는, (내부적으로 GetTypes를 호출하는) DefinedTypes
foreach (Type type in asm.DefinedTypes)
{
    Console.WriteLine(type.FullName);
}

Unhandled exception. System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types.
Could not load file or assembly 'System.DirectoryServices.Protocols, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
   at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
   at System.Reflection.Assembly.GetTypes()
   at Program.Main(String[] args) in C:\...\Console1\Console1\Program.cs:line 10
System.IO.FileNotFoundException: Could not load file or assembly 'System.DirectoryServices.Protocols, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
File name: 'System.DirectoryServices.Protocols, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'

Assembly reflectionOnlyAsm = Assembly.ReflectionOnlyLoad(asm.FullName);

Unhandled exception. System.PlatformNotSupportedException: ReflectionOnly loading is not supported on this platform.
   at System.Reflection.Assembly.ReflectionOnlyLoad(String assemblyString)
   at Program.Main(String[] args) in C:\...\Console1\Console1\Program.cs:line 13