namespace System { public struct HashCode { public static int Combine<[System.Runtime.CompilerServices.Nullable(2)] T1>(T1 value1); public static int Combine<[System.Runtime.CompilerServices.Nullable(2)] T1, [System.Runtime.CompilerServices.Nullable(2)] T2>(T1 value1, T2 value2); public static int Combine<[System.Runtime.CompilerServices.Nullable(2)] T1, [System.Runtime.CompilerServices.Nullable(2)] T2, [System.Runtime.CompilerServices.Nullable(2)] T3>(T1 value1, T2 value2, T3 value3); public static int Combine<[System.Runtime.CompilerServices.Nullable(2)] T1, [System.Runtime.CompilerServices.Nullable(2)] T2, [System.Runtime.CompilerServices.Nullable(2)] T3, [System.Runtime.CompilerServices.Nullable(2)] T4>(T1 value1, T2 value2, T3 value3, T4 value4); public static int Combine<[System.Runtime.CompilerServices.Nullable(2)] T1, [System.Runtime.CompilerServices.Nullable(2)] T2, [System.Runtime.CompilerServices.Nullable(2)] T3, [System.Runtime.CompilerServices.Nullable(2)] T4, [System.Runtime.CompilerServices.Nullable(2)] T5>(T1 value1, T2 value2, T3 value3, T4 value4, T5 value5); public static int Combine<[System.Runtime.CompilerServices.Nullable(2)] T1, [System.Runtime.CompilerServices.Nullable(2)] T2, [System.Runtime.CompilerServices.Nullable(2)] T3, [System.Runtime.CompilerServices.Nullable(2)] T4, [System.Runtime.CompilerServices.Nullable(2)] T5, [System.Runtime.CompilerServices.Nullable(2)] T6>(T1 value1, T2 value2, T3 value3, T4 value4, T5 value5, T6 value6); public static int Combine<[System.Runtime.CompilerServices.Nullable(2)] T1, [System.Runtime.CompilerServices.Nullable(2)] T2, [System.Runtime.CompilerServices.Nullable(2)] T3, [System.Runtime.CompilerServices.Nullable(2)] T4, [System.Runtime.CompilerServices.Nullable(2)] T5, [System.Runtime.CompilerServices.Nullable(2)] T6, [System.Runtime.CompilerServices.Nullable(2)] T7>(T1 value1, T2 value2, T3 value3, T4 value4, T5 value5, T6 value6, T7 value7); public static int Combine<[System.Runtime.CompilerServices.Nullable(2)] T1, [System.Runtime.CompilerServices.Nullable(2)] T2, [System.Runtime.CompilerServices.Nullable(2)] T3, [System.Runtime.CompilerServices.Nullable(2)] T4, [System.Runtime.CompilerServices.Nullable(2)] T5, [System.Runtime.CompilerServices.Nullable(2)] T6, [System.Runtime.CompilerServices.Nullable(2)] T7, [System.Runtime.CompilerServices.Nullable(2)] T8>(T1 value1, T2 value2, T3 value3, T4 value4, T5 value5, T6 value6, T7 value7, T8 value8); public void Add<[System.Runtime.CompilerServices.Nullable(2)] T>(T value); public void Add<[System.Runtime.CompilerServices.Nullable(2)] T>(T value, IEqualityComparer<T> comparer); public int ToHashCode(); } }