syntax_data: {"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"early_dcx.early_fatal(format!(\"`--env-set`:"}]}
source_snippet:             early_dcx.early_fatal(format!("`--env-set`: specify value for variable `{arg}`"));
context_before:         } else {
context_after:         }