namespace System { public static class GC { public static int MaxGeneration { get; } public static void AddMemoryPressure(long bytesAllocated); public static void CancelFullGCNotification(); public static void Collect(); public static void Collect(int generation); public static void Collect(int generation, GCCollectionMode mode); public static void Collect(int generation, GCCollectionMode mode, bool blocking); public static void Collect(int generation, GCCollectionMode mode, bool blocking, bool compacting); public static int CollectionCount(int generation); public static void EndNoGCRegion(); public static int GetGeneration(object obj); public static int GetGeneration(WeakReference wo); public static long GetTotalMemory(bool forceFullCollection); public static void KeepAlive(object obj); public static void RegisterForFullGCNotification(int maxGenerationThreshold, int largeObjectHeapThreshold); public static void RemoveMemoryPressure(long bytesAllocated); public static void ReRegisterForFinalize(object obj); public static void SuppressFinalize(object obj); public static bool TryStartNoGCRegion(long totalSize); public static bool TryStartNoGCRegion(long totalSize, bool disallowFullBlockingGC); public static bool TryStartNoGCRegion(long totalSize, long lohSize); public static bool TryStartNoGCRegion(long totalSize, long lohSize, bool disallowFullBlockingGC); public static GCNotificationStatus WaitForFullGCApproach(); public static GCNotificationStatus WaitForFullGCApproach(int millisecondsTimeout); public static GCNotificationStatus WaitForFullGCComplete(); public static GCNotificationStatus WaitForFullGCComplete(int millisecondsTimeout); public static void WaitForPendingFinalizers(); } } namespace System { public abstract class TimeZone { public static TimeZone CurrentTimeZone { get; } public abstract string DaylightName { get; } public abstract string StandardName { get; } protected TimeZone(); public abstract DaylightTime GetDaylightChanges(int year); public abstract TimeSpan GetUtcOffset(DateTime time); public virtual bool IsDaylightSavingTime(DateTime time); public static bool IsDaylightSavingTime(DateTime time, DaylightTime daylightTimes); public virtual DateTime ToLocalTime(DateTime time); public virtual DateTime ToUniversalTime(DateTime time); } }