Performs maintenance commands.

Operation Exceptions:
1. NOT_IMPLEMENTED - Raised when EMS dos not supported this operation.
2. INTERNAL_ERROR - Raised in case of non-specific EMS internal failure.
3. INVALID_INPUT - Raised when any input parameter is syntactically incorrect (e.g. maintenanceOperation
    is invalid).
4. UNABLE_TO_COMPLY - Raised when the operation is denied by the managed element (e.g. because of the
    current state of the object).
5. NE_COMM_LOSS - Raised when communication to managed element is lost.
