syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"Tree::byte(0x00).then(Tree::byte(0x01))"}]}
source_snippet:                 Tree::byte(0x00).then(Tree::byte(0x01))
context_before:                 layout.prune(&|d| matches!(d, Def::HasSafetyInvariants)),
context_after:             );