Function file_sequence 

pub fn file_sequence(
    patterns: &[String],
    root_dir: &JPath,
    user_home: &str,
    logger: &Logger,
) -> Result<Vec<JPath>, String>

FileSystem.fileSequence(patterns, rootDir): each pattern is a glob, or a file or directory path relative to root_dir, or absolute. Err is a PatternSyntaxException message (upstream crashes).