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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def listMigrationBlocks(self, migration_request_id=""):
 """ get eveything of block that is has status = 0 and migration_request_id as specified. """


        conn = self.dbi.connection()
        try:
            return self.mgrblklist.execute(conn, migration_request_id=migration_request_id)
        finally:
            if conn: conn.close()