CodeGenerate supports configuring Code length.

[Fact]
public void Test_CreateCode_With_Length()
{
	var generate = new GeneralTreeCodeGenerate(new GeneralTreeCodeGenerateConfiguration()
	{
		CodeLength = 3
	});

	generate.CreateCode().ShouldBe(null);
	generate.CreateCode(42).ShouldBe("042");
	generate.CreateCode(1, 2).ShouldBe("001.002");
	generate.CreateCode(1, 2, 3).ShouldBe("001.002.003");
}