syntax_data: {"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"map_layout(cx.calc.array_like(&element,"}]}
source_snippet:             map_layout(cx.calc.array_like(&element, None).map(|mut layout| {
context_before:             let element = cx.layout_of(element)?;
context_after:                 // a randomly chosen value to distinguish slices