syntax_data: {"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"check(\"\\r\\n\","}]}
source_snippet:     check("\r\n", "\n", &[1]);
context_before:     check("\r\r", "\r\r", &[]);
context_after:     check("hello world", "hello world", &[]);