syntax_data: {"ast_node_type":"other","tokens":[{"end":29,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // type dictates.
context_before:             // is whether we have enough data for the Dst to be valid in accordance with what its
context_after:             // For example, in a u8 to `()` transmutation, we have enough data available from the u8