syntax_data: {"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"for"}]}
source_snippet:                     for (i, arg) in args.args.iter().enumerate().take(params_in_repr.domain_size())
context_before:                     // the domain size check is needed because the HIR may not be well-formed at this point
context_after:                     {