syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"this.cfg.goto(else_blk,"}]}
source_snippet:                 this.cfg.goto(else_blk, source_info, join_block);
context_before:                 this.cfg.goto(then_blk, source_info, join_block);
context_after:                 join_block.unit()