I would like to convert NFAs to DFAs using the function nfa2dfa from Automa.jl. However I can’t see in the docs how to specify an NFA. Here is a toy example NFA.

```
Automaton("nondet",2,"abcd",[ [ [ 1 ], [ 2 ] ], [ [ 2 ], [ ] ], [ [ 2 ], [ ] ], [ [ 1 ], [ 2 ] ] ],[ 1 ],[ 1, 2 ])
```

This follows the specification from GAP. It has 2 states and 4 letters. Here it is as a transition matrix:

```
| 1 2
-------------------
a | [ 1 ] [ 2 ]
b | [ 2 ]
c | [ 2 ]
d | [ 1 ] [ 2 ]
Initial state: [ 1 ]
Accepting states: [ 1, 2 ]
```

How can you make an NFA in Automa.jl from this example?