syntax_data: {"ast_node_type":"other","tokens":[{"end":43,"kind":"keyword","start":0,"text":"a2,"}]}
source_snippet:                     a2, a3, a4, a5, a6, a7,
context_before:                     // a0-a1 are reserved, other access registers are volatile
context_after:                     a8, a9, a10, a11, a12, a13, a14, a15,