How to make a tree topology in a table?

Question

Programming

It is possible to create a table in which to write the table and so continue as long as necessary.
I know how to do this with a limited number of table attachments.
LUA

table = {}
test2 = "New"

table[test1] = "Set Group"
table[test2] = {}

t = table[test2]
t[test1] = "New arg"
t[test2] = {}

this way you can programmatically create as much as you like, but I want to learn how to make an infinite replenishment without manually adding new tables.
I will be grateful for the code in LUA or another language, and in general for any suggestive thought.

Answer 1

I'll draw an answer for you (c) :)
or maybe I just don't know what a tree is?