<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def alter_user( self, name, password=None, is_super=None, insert_access=None ):
 """ Alter MapD user parameters Parameters name : string User name password : string Password is_super : bool If user is a superuser insert_access : string If users need to insert records to a database they do not own, use insert_access property to give them the required privileges. """

        statement = ddl.AlterUser(
            name=name,
            password=password,
            is_super=is_super,
            insert_access=insert_access,
        )
        self._execute(statement)