code: func Iso88591ToUTF8(db XODB, v0 int, v1 int, v2 pgtypes.Cstring, v3 pgtypes.Internal, v4 int) error {
  	var err error
  
  	// sql query
  	const sqlstr = `SELECT pg_catalog.iso8859_1_to_utf8($1, $2, $3, $4, $5)`
  
  	// run query
  	XOLog(sqlstr)
  	_, err = db.Exec(sqlstr)
  	return err
  }
docs: // Iso88591ToUTF8 calls the stored procedure 'pg_catalog.iso8859_1_to_utf8(integer, integer, cstring, internal, integer) void' on db.