syntax_data: {"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"arg.cast_to(CastTarget::prefixed("}]}
source_snippet:         arg.cast_to(CastTarget::prefixed(
context_before:     if align_bytes == size.bytes() {
context_after:             [Some(reg), None, None, None, None, None, None, None],