pub fn process_cli_args(
    matches: &ArgMatches,
    api: &str,
    unique_ids: Vec<String>,
    index_type: IndexType
) -> Result<(u64, Vec<String>, Vec<String>)>
Expand description

Take CLI arguments and parse them. Return a tuple of:

(the size arg you passed, vector of taxon ID’s, vector of URLs, and a vector of unique ID’s).