syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":".fold(LinkSelfContainedComponents::empty(),"}]}
source_snippet:                 .fold(LinkSelfContainedComponents::empty(), |a, b| a | b);
context_before:                 .into_iter()
context_after:             base.link_self_contained = LinkSelfContainedDefault::WithComponents(components);