syntax_data: {"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":".unwrap_or_else(||"}]}
source_snippet:                     .unwrap_or_else(|| panic!("There were no fields named `{name}`."));
context_before:                     .find(|(_, field_def)| name == field_def.name)
context_after:                 fields[field_idx].unwrap_leaf() == ScalarInt::TRUE