syntax_data: {"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // of symbols we'll allow to be undefined. We don't currently have a
context_before:                 // FIXME we probably shouldn't pass this but instead pass an explicit list
context_after:                 // mechanism of knowing, however, which symbols are intended to be imported