AST: inserting nodes in a list of children
Insert A in empty list
size: 1
A
Insert B first in list
size: 2
B
A
Insert C last in list
size: 3
B
A
C
Insert D at position 2
size: 4
B
A
D
C
Insert E at erroneous position (after node getNumNode())
Error caught: insertChild error: can not insert child at position outside list of elements