get Ast Children
Retrieves a list of AST children of the specified node by iterating all fields that are annotated with the SubGraph annotation and its value "AST".
Please note, that you SHOULD NOT call this directly in a recursive function, since the AST might have loops and you will probably run into a StackOverflowError. Therefore, use of Node.accept with the Strategy.AST_FORWARD is encouraged.
Return
a list of children from the node's AST
Parameters
node
the start node