/// <summary>
/// 准备同意/不同意流程，流转到到选择同意/不同意的活动（B）
/// </summary>
/// <returns></returns>
public static IWfActivity PrepareAndMoveToAgreeSelectorActivity()
{
//准备同意/不同意的退回流程。在B环节有两根出线BC和BA，BA是退回线，退回到A。其中BA默认是没有选择的
IWfProcessDescriptor processDesp = ReturnExecutorTestHelper.PrepareAgreeReturnProcessDesp();
IWfProcess process = ReturnExecutorTestHelper.StartSpecialReturnProcess(processDesp);
WfProcessTestCommon.MoveToNextDefaultActivity(process); //To B
return(process.CurrentActivity);
}