syntax_data: {"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"ls:"}]}
source_snippet:     ls: Vec<String> = (Vec::new(), parse_list, [UNTRACKED],
context_before:         valid options are `file`, `line`, and `column` (default: `file,line,column`)"),
context_after:         "decode and print various parts of the crate metadata for a library crate \