syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // i128:128  = 128-bit-integer, minimum_alignment=128, preferred_alignment=128
context_before:         // i64:64    = 64-bit-integer, minimum_alignment=64, preferred_alignment=64
context_after:         // n32:64    = 32 and 64 are native integer widths; Elements of this set are considered to support most general arithmetic operations efficiently.