syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"v2:"}]}
source_snippet:         v2: vreg, vreg_low16 = ["v2", "b2", "h2", "s2", "d2", "q2", "z2"],
context_before:         v1: vreg, vreg_low16 = ["v1", "b1", "h1", "s1", "d1", "q1", "z1"],
context_after:         v3: vreg, vreg_low16 = ["v3", "b3", "h3", "s3", "d3", "q3", "z3"],