syntax_data: {"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"this.build_zero_repeat(block,"}]}
source_snippet:                     this.build_zero_repeat(block, value, scope, source_info)
context_before:                 if Some(0) == count.try_to_target_usize(this.tcx) {
context_after:                 } else {