syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // binder has vars. This won't be present in the binder's bound
context_before:         // If we're looking for the HAS_BINDER_VARS flag, check if the
context_after:         // value, so we need to check here too.