syntax_data: {"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // We also do *not* require `const PartialEq`, not even in `const fn`. This violates the model
context_before:     // can ensure that the type really implements `PartialEq`.
context_after:     // that patterns can only do things that the code could also do without patterns, but it is