public void TryGetValueTest_Missing_Pass()
        {
            var dict = new BiDictionaryOneToOne <int, int> {
                { 0, 815 },
            };

            Assert.False(dict.TryGetValue(42, out _));
        }
        public void TryGetValueTest_Exists_Pass()
        {
            var dict = new BiDictionaryOneToOne <int, int> {
                { 0, 815 },
            };

            Assert.True(dict.TryGetValue(0, out var second));
            Assert.Equal(815, second);
        }