syntax_data: {"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"arg.layout.homogeneous_aggregate(cx).ok().and_then(|ha|"}]}
source_snippet:     arg.layout.homogeneous_aggregate(cx).ok().and_then(|ha| ha.unit()).and_then(|unit| {
context_before: {
context_after:         let size = arg.layout.size;