syntax_data: {"ast_node_type":"import","tokens":[{"end":98,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // change the upper bound to be inclusive, because for most lines, the upper bound is the same
context_before:     // line. However, it isn't according to the exclusive upper bound of this range. We cannot
context_after:     // as the lower bound of the next line, so there would be an ambiguity.