#if NET20 || NET30 || NET35 || NET40 || !NET_4_6

namespace System.Runtime.CompilerServices
{
    /// <summary>
    ///   Represents state machines generated for asynchronous methods. This type is intended for compiler use only.
    /// </summary>
    public interface IAsyncStateMachine
    {
        /// <summary>
        ///   Moves the state machine to its next state.
        /// </summary>
        void MoveNext();

        /// <summary>
        ///   Configures the state machine with a heap-allocated replica.
        /// </summary>
        /// <param name="stateMachine"> The heap-allocated replica. </param>
        void SetStateMachine(IAsyncStateMachine stateMachine);
    }
}

#endif