public void TryExtractNamespace_ReturnsTrue()
        {
            // Arrange
            var csharpAddUsing = "using Abc.Xyz;";

            // Act
            var res = AddUsingsCodeActionProviderFactory.TryExtractNamespace(csharpAddUsing, out var @namespace);

            // Assert
            Assert.True(res);
            Assert.Equal("Abc.Xyz", @namespace);
        }
        public void TryExtractNamespace_WithStatic_ReturnsTruue()
        {
            // Arrange
            var csharpAddUsing = "using static X.Y.Z;";

            // Act
            var res = AddUsingsCodeActionProviderFactory.TryExtractNamespace(csharpAddUsing, out var @namespace);

            // Assert
            Assert.True(res);
            Assert.Equal("static X.Y.Z", @namespace);
        }
        public void TryExtractNamespace_Invalid_ReturnsFalse()
        {
            // Arrange
            var csharpAddUsing = "Abc.Xyz;";

            // Act
            var res = AddUsingsCodeActionProviderFactory.TryExtractNamespace(csharpAddUsing, out var @namespace);

            // Assert
            Assert.False(res);
            Assert.Empty(@namespace);
        }