public async void FindAsync_MustReturn_Entity(bool includeReferences)
        {
            // Arrange
            var sut    = new ReadOnlyRepositoryFixture(includeReferences);
            var entity = sut.Configuration.DbSet.Last();

            // Act
            var computed = await sut.FindAsync(entity.Id);

            // Assert
            Assert.NotNull(computed.Id);
            Assert.Equal(entity.Id, computed.Id);

            if (includeReferences)
            {
                Assert.NotNull(computed.Reference);
                Assert.NotNull(computed.Collection);
                Assert.NotEmpty(computed.Collection);
            }
        }