syntax_data: {"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"e.ok().and_then(|e|"}]}
source_snippet:                     e.ok().and_then(|e| {
context_before:                 .filter_map(|e| {
context_after:                         e.file_name().to_str().map(|s| {