stri_enc_list(simplified = FALSE)simplified is FALSE (the default), a list of
 character vectors is returned. Each list element represents a unique
 character encoding. The name attribute gives the If simplified is TRUE, then the resulting list
is coerced to a character vector and sorted, and returned with
removed duplicated entries.
"UTF8" is also valid,
see stringi-encoding for more information.stri_enc_get,
  stri_enc_set; stri_enc_info;
  stri_enc_mark;
  stringi-encoding