syntax_data: {"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"(\"sm_120a\","}]}
source_snippet:     ("sm_120a", Unstable(sym::nvptx_target_feature), &["sm_120"]),
context_before:     ("sm_120", Unstable(sym::nvptx_target_feature), &["sm_101"]),
context_after:     // tidy-alphabetical-end