syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"Rvalue::NullaryOp(NullOp::AlignOf,"}]}
source_snippet:                     Rvalue::NullaryOp(NullOp::AlignOf, value_ty),
context_before:                     align,
context_after:                 );