presto-hive/src/main/java/io/prestosql/plugin/hive/RoleAlreadyExistsException.java/RoleAlreadyExistsException/RoleAlreadyExistsException
class RoleAlreadyExistsException:    public RoleAlreadyExistsException(String roleName)
    {
        super(ALREADY_EXISTS, format("Role already exists: '%s'", roleName), null);
    }