title: Can SimpleXMLElement::children() have multiple prefixes?
body: <p>For SimpleXMLElement::children() method, can I include multiple prefixes as parameters.</p>
  
  <p>Consider following xml. Here, the children('air',true) method can get child elements with "air" as prefix. Similarly, with children('universal',true), I can get child elements with "universal" prefix. </p>
  
  <pre><code>&lt;universal:AirCreateReservationRsp xmlns:universal="http://www.travelport.com/schema/universal_v42_0" xmlns:common_v42_0="http://www.travelport.com/schema/common_v42_0" xmlns:air="http://www.travelport.com/schema/air_v42_0" TraceId="trace" TransactionId="6A97EC390A07643C43916EB9FA2934A1" ResponseTime="6143"&gt;
      &lt;universal:UniversalRecord LocatorCode="FUEV5F" Version="0" Status="Active"&gt;
          &lt;common_v42_0:BookingTraveler Key="gr8AVWGCR064r57Jt0+8bA==" TravelerType="ADT" DOB="1957-05-12" Gender="M" ElStat="A"&gt;
              &lt;common_v42_0:BookingTravelerName Prefix="Herr" First="Frederick" Last="Heinrich"/&gt;
              &lt;common_v42_0:DeliveryInfo&gt;
                  &lt;common_v42_0:ShippingAddress Key="2wokqt8Q2BKAfRGAAAAAAA==" ElStat="A"&gt;
                      &lt;common_v42_0:AddressName&gt;Residence&lt;/common_v42_0:AddressName&gt;
                      &lt;common_v42_0:Street&gt;Rossmarkt 6&lt;/common_v42_0:Street&gt;
                      &lt;common_v42_0:City&gt;Frankfurt&lt;/common_v42_0:City&gt;
                      &lt;common_v42_0:State&gt;HESSE&lt;/common_v42_0:State&gt;
                      &lt;common_v42_0:PostalCode&gt;60311&lt;/common_v42_0:PostalCode&gt;
                      &lt;common_v42_0:Country&gt;DE&lt;/common_v42_0:Country&gt;
                      &lt;common_v42_0:ProviderReservationInfoRef Key="2wokqt8Q2BKARSGAAAAAAA=="/&gt;
                  &lt;/common_v42_0:ShippingAddress&gt;
              &lt;/common_v42_0:DeliveryInfo&gt;
              &lt;common_v42_0:PhoneNumber Key="2wokqt8Q2BKAdRGAAAAAAA==" Type="None" Location="FRA" CountryCode="069" Number="261111111" AreaCode="49" ElStat="A"&gt;
                  &lt;common_v42_0:ProviderReservationInfoRef Key="2wokqt8Q2BKARSGAAAAAAA=="/&gt;
              &lt;/common_v42_0:PhoneNumber&gt;
              &lt;common_v42_0:Email Key="2wokqt8Q2BKAeRGAAAAAAA==" Type="Home" EmailID="test@travelport.com" ElStat="A"&gt;
                  &lt;common_v42_0:ProviderReservationInfoRef Key="2wokqt8Q2BKARSGAAAAAAA=="/&gt;
              &lt;/common_v42_0:Email&gt;
              &lt;common_v42_0:Address Key="2wokqt8Q2BKAgRGAAAAAAA==" ElStat="A"&gt;
                  &lt;common_v42_0:AddressName&gt;Residence&lt;/common_v42_0:AddressName&gt;
                  &lt;common_v42_0:Street&gt;Rossmarkt 6&lt;/common_v42_0:Street&gt;
                  &lt;common_v42_0:City&gt;Frankfurt&lt;/common_v42_0:City&gt;
                  &lt;common_v42_0:State&gt;HESSE&lt;/common_v42_0:State&gt;
                  &lt;common_v42_0:PostalCode&gt;60311&lt;/common_v42_0:PostalCode&gt;
                  &lt;common_v42_0:Country&gt;DE&lt;/common_v42_0:Country&gt;
                  &lt;common_v42_0:ProviderReservationInfoRef Key="2wokqt8Q2BKARSGAAAAAAA=="/&gt;
              &lt;/common_v42_0:Address&gt;
          &lt;/common_v42_0:BookingTraveler&gt;
          &lt;common_v42_0:ActionStatus Key="2wokqt8Q2BKAoRGAAAAAAA==" Type="TAW" TicketDate="2019-06-20T16:42:00.000+04:00" ProviderReservationInfoRef="2wokqt8Q2BKARSGAAAAAAA==" ProviderCode="1G" ElStat="A"/&gt;
          &lt;universal:ProviderReservationInfo Key="2wokqt8Q2BKARSGAAAAAAA==" ProviderCode="1G" LocatorCode="GQJ1R4" CreateDate="2019-06-18T12:37:55.676+00:00" ModifiedDate="2019-06-18T12:37:55.676+00:00" HostCreateDate="2019-06-18" OwningPCC="62RD"/&gt;\n
          &lt;air:AirReservation LocatorCode="CAUJ2A" CreateDate="2019-06-18T12:37:55.104+00:00" ModifiedDate="2019-06-18T12:37:55.676+00:00"&gt;
              &lt;common_v42_0:SupplierLocator SupplierCode="EY" SupplierLocatorCode="QIEPVA" ProviderReservationInfoRef="2wokqt8Q2BKARSGAAAAAAA==" CreateDateTime="2019-06-18T12:37:00.000+00:00"/&gt;
              &lt;common_v42_0:BookingTravelerRef Key="gr8AVWGCR064r57Jt0+8bA=="/&gt;
              &lt;common_v42_0:ProviderReservationInfoRef Key="2wokqt8Q2BKARSGAAAAAAA=="/&gt;
              &lt;air:AirSegment Key="RzO2Zt3R2BKAb+f9BAAAAA==" Group="0" Carrier="EY" CabinClass="Economy" FlightNumber="5429" ProviderCode="1G" Origin="XNB" Destination="AUH" DepartureTime="2019-06-20T23:50:00.000+04:00" ArrivalTime="2019-06-21T01:10:00.000+04:00" TravelTime="80" Distance="67" ClassOfService="L" ETicketability="Yes" Equipment="BUS" MarriageGroup="1" Status="HK" ChangeOfPlane="false" GuaranteedPaymentCarrier="No" ProviderReservationInfoRef="2wokqt8Q2BKARSGAAAAAAA==" TravelOrder="1" ProviderSegmentOrder="1" OptionalServicesIndicator="false" ParticipantLevel="Secure Sell" LinkAvailability="true" ElStat="A"&gt;
                  &lt;air:FlightDetails Key="2wokqt8Q2BKALSGAAAAAAA==" Origin="XNB" Destination="AUH" DepartureTime="2019-06-20T23:50:00.000+04:00" ArrivalTime="2019-06-21T01:30:00.000+04:00" FlightTime="100" TravelTime="80" Equipment="BUS" DestinationTerminal="1" AutomatedCheckin="false" ElStat="C"/&gt;
                  &lt;air:Connection Duration="105"/&gt;
                  &lt;common_v42_0:SellMessage&gt;ARRIVES AUH TERMINAL 1&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;*010 9W 6567  AT 9285  AZ 5745  BT 5784  GA 9187  HM 6229  HU 87*&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;* *&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;*010 JU 8116  VA 7101  VN 3217*&lt;/common_v42_0:SellMessage&gt;
              &lt;/air:AirSegment&gt;
              &lt;air:AirSegment Key="RzO2Zt3R2BKAd+f9BAAAAA==" Group="0" Carrier="EY" CabinClass="Economy" FlightNumber="246" ProviderCode="1G" Origin="AUH" Destination="COK" DepartureTime="2019-06-21T02:55:00.000+04:00" ArrivalTime="2019-06-21T08:30:00.000+05:30" TravelTime="245" Distance="1749" ClassOfService="L" ETicketability="Yes" Equipment="321" MarriageGroup="1" Status="HK" ChangeOfPlane="false" GuaranteedPaymentCarrier="No" ProviderReservationInfoRef="2wokqt8Q2BKARSGAAAAAAA==" TravelOrder="2" ProviderSegmentOrder="2" OptionalServicesIndicator="false" ParticipantLevel="Secure Sell" LinkAvailability="true" ElStat="A"&gt;
                  &lt;air:FlightDetails Key="2wokqt8Q2BKAMSGAAAAAAA==" Origin="AUH" Destination="COK" DepartureTime="2019-06-21T02:55:00.000+04:00" ArrivalTime="2019-06-21T08:30:00.000+05:30" FlightTime="245" TravelTime="245" Equipment="321" OriginTerminal="3" DestinationTerminal="3" AutomatedCheckin="false" ElStat="C"/&gt;
                  &lt;common_v42_0:SellMessage&gt;DEPARTS AUH TERMINAL 3  - ARRIVES COK TERMINAL 3&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;*010 9W 6616  XY 3246*&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;ADD ADVANCE PASSENGER INFORMATION SSRS DOCA/DOCO/DOCS&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;PERSONAL DATA WHICH IS PROVIDED TO US IN CONNECTION&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;WITH YOUR TRAVEL MAY BE PASSED TO GOVERNMENT AUTHORITIES&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;FOR BORDER CONTROL AND AVIATION SECURITY PURPOSES&lt;/common_v42_0:SellMessage&gt;
              &lt;/air:AirSegment&gt;
              &lt;air:AirSegment Key="RzO2Zt3R2BKAf+f9BAAAAA==" Group="1" Carrier="EY" CabinClass="Economy" FlightNumber="247" ProviderCode="1G" Origin="COK" Destination="AUH" DepartureTime="2019-06-23T10:00:00.000+05:30" ArrivalTime="2019-06-23T12:30:00.000+04:00" TravelTime="240" Distance="1749" ClassOfService="L" ETicketability="Yes" Equipment="321" MarriageGroup="2" Status="HK" ChangeOfPlane="false" GuaranteedPaymentCarrier="No" ProviderReservationInfoRef="2wokqt8Q2BKARSGAAAAAAA==" TravelOrder="3" ProviderSegmentOrder="3" OptionalServicesIndicator="false" ParticipantLevel="Secure Sell" LinkAvailability="true" ElStat="A"&gt;
                  &lt;air:FlightDetails Key="2wokqt8Q2BKANSGAAAAAAA==" Origin="COK" Destination="AUH" DepartureTime="2019-06-23T10:00:00.000+05:30" ArrivalTime="2019-06-23T12:30:00.000+04:00" FlightTime="240" TravelTime="240" Equipment="321" OriginTerminal="3" DestinationTerminal="1" AutomatedCheckin="false" ElStat="C"/&gt;
                  &lt;common_v42_0:SellMessage&gt;DEPARTS COK TERMINAL 3  - ARRIVES AUH TERMINAL 1&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;*010 9W 6617  XY 3247*&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;ADD ADVANCE PASSENGER INFORMATION SSRS DOCA/DOCO/DOCS&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;PERSONAL DATA WHICH IS PROVIDED TO US IN CONNECTION&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;WITH YOUR TRAVEL MAY BE PASSED TO GOVERNMENT AUTHORITIES&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;FOR BORDER CONTROL AND AVIATION SECURITY PURPOSES&lt;/common_v42_0:SellMessage&gt;
              &lt;/air:AirSegment&gt;
              &lt;air:AirSegment Key="RzO2Zt3R2BKAh+f9BAAAAA==" Group="2" Carrier="EY" CabinClass="Economy" FlightNumber="5426" ProviderCode="1G" Origin="AUH" Destination="XNB" DepartureTime="2019-06-23T20:30:00.000+04:00" ArrivalTime="2019-06-23T21:50:00.000+04:00" TravelTime="80" Distance="67" ClassOfService="L" ETicketability="Yes" Equipment="BUS" MarriageGroup="2" Status="HK" ChangeOfPlane="false" GuaranteedPaymentCarrier="No" ProviderReservationInfoRef="2wokqt8Q2BKARSGAAAAAAA==" TravelOrder="4" ProviderSegmentOrder="4" OptionalServicesIndicator="false" ParticipantLevel="Secure Sell" LinkAvailability="true" ElStat="A"&gt;
                  &lt;air:FlightDetails Key="2wokqt8Q2BKAOSGAAAAAAA==" Origin="AUH" Destination="XNB" DepartureTime="2019-06-23T20:30:00.000+04:00" ArrivalTime="2019-06-23T22:10:00.000+04:00" FlightTime="100" TravelTime="80" Equipment="BUS" OriginTerminal="1" AutomatedCheckin="false" ElStat="C"/&gt;
                  &lt;common_v42_0:SellMessage&gt;DEPARTS AUH TERMINAL 1&lt;/common_v42_0:SellMessage&gt;
                  &lt;common_v42_0:SellMessage&gt;*010 9W 6554  AZ 4158  BT 5749  JU 8114  VA 7154*&lt;/common_v42_0:SellMessage&gt;
              &lt;/air:AirSegment&gt;
              &lt;air:AirPricingInfo Key="RzO2Zt3R2BKAk+f9BAAAAA==" TotalPrice="OMR150.800" BasePrice="AED760" ApproximateTotalPrice="OMR150.800" ApproximateBasePrice="OMR80.000" EquivalentBasePrice="OMR80.000" Taxes="OMR70.800" LatestTicketingTime="2019-06-18T23:59:00.000+04:00" TrueLastDateToTicket="2019-06-18T23:59:00.000+04:00" PricingMethod="Guaranteed" Refundable="true" Exchangeable="true" IncludesVAT="false" ETicketability="Yes" PlatingCarrier="EY" ProviderCode="1G" ProviderReservationInfoRef="2wokqt8Q2BKARSGAAAAAAA==" AirPricingInfoGroup="1" PricingType="StoredFare" ElStat="A" FareCalculationInd="G"&gt;
                  &lt;air:FareInfo Key="2wokqt8Q2BKAHSGAAAAAAA==" FareBasis="LLRM3AE/" PassengerTypeCode="ADT" Origin="XNB" Destination="AUH" EffectiveDate="2019-06-18T00:00:00.000+04:00" NotValidBefore="2019-06-20" NotValidAfter="2019-06-20" PseudoCityCode="62RD" ElStat="C"&gt;
                      &lt;air:FareTicketDesignator Value="YV"/&gt;
                      &lt;common_v42_0:Endorsement Value="NON ENDO/ REF"/&gt;
                      &lt;air:BaggageAllowance&gt;
                          &lt;air:MaxWeight Value="30" Unit="Kilograms"/&gt;
                      &lt;/air:BaggageAllowance&gt;
                  &lt;/air:FareInfo&gt;
                  &lt;air:FareInfo Key="2wokqt8Q2BKAISGAAAAAAA==" FareBasis="LLRM3AE/" PassengerTypeCode="ADT" Origin="AUH" Destination="COK" EffectiveDate="2019-06-18T00:00:00.000+04:00" Amount="NUC148.65" NotValidBefore="2019-06-21" NotValidAfter="2019-06-21" PseudoCityCode="62RD" ElStat="C"&gt;
                      &lt;air:FareTicketDesignator Value="YV"/&gt;
                      &lt;air:FareSurcharge Key="2wokqt8Q2BKAWSGAAAAAAA==" Type="Other" Amount="NUC3.00" ElStat="A" SegmentRef="RzO2Zt3R2BKAd+f9BAAAAA=="/&gt;
                      &lt;air:FareSurcharge Key="2wokqt8Q2BKAXSGAAAAAAA==" Type="Weekend Surcharge" Amount="NUC13.61" ElStat="A" SegmentRef="RzO2Zt3R2BKAd+f9BAAAAA=="/&gt;
                      &lt;air:FareSurcharge Key="2wokqt8Q2BKAYSGAAAAAAA==" Type="Other" Amount="NUC6.80" ElStat="A" SegmentRef="RzO2Zt3R2BKAd+f9BAAAAA=="/&gt;
                      &lt;common_v42_0:Endorsement Value="NON ENDO/ REF"/&gt;
                      &lt;air:BaggageAllowance&gt;
                          &lt;air:MaxWeight Value="30" Unit="Kilograms"/&gt;
                      &lt;/air:BaggageAllowance&gt;
                  &lt;/air:FareInfo&gt;
                  &lt;air:FareInfo Key="2wokqt8Q2BKAJSGAAAAAAA==" FareBasis="LLRM1AE/" PassengerTypeCode="ADT" Origin="COK" Destination="AUH" EffectiveDate="2019-06-18T00:00:00.000+04:00" NotValidBefore="2019-06-23" NotValidAfter="2019-06-23" PseudoCityCode="62RD" ElStat="C"&gt;
                      &lt;air:FareTicketDesignator Value="YV"/&gt;
                      &lt;common_v42_0:Endorsement Value="NON ENDO/ REF"/&gt;
                      &lt;air:BaggageAllowance&gt;
                          &lt;air:MaxWeight Value="30" Unit="Kilograms"/&gt;
                      &lt;/air:BaggageAllowance&gt;
                  &lt;/air:FareInfo&gt;
                  &lt;air:FareInfo Key="2wokqt8Q2BKAKSGAAAAAAA==" FareBasis="LLRM1AE/" PassengerTypeCode="ADT" Origin="AUH" Destination="XNB" EffectiveDate="2019-06-18T00:00:00.000+04:00" Amount="NUC56.08" NotValidBefore="2019-06-23" NotValidAfter="2019-06-23" PseudoCityCode="62RD" ElStat="C"&gt;
                      &lt;air:FareTicketDesignator Value="YV"/&gt;
                      &lt;air:FareSurcharge Key="2wokqt8Q2BKAdSGAAAAAAA==" Type="Other" Amount="NUC3.00" ElStat="A" SegmentRef="RzO2Zt3R2BKAh+f9BAAAAA=="/&gt;
                      &lt;air:FareSurcharge Key="2wokqt8Q2BKAeSGAAAAAAA==" Type="Other" Amount="NUC6.80" ElStat="A" SegmentRef="RzO2Zt3R2BKAh+f9BAAAAA=="/&gt;
                      &lt;common_v42_0:Endorsement Value="NON ENDO/ REF"/&gt;
                      &lt;air:BaggageAllowance&gt;
                          &lt;air:MaxWeight Value="30" Unit="Kilograms"/&gt;
                      &lt;/air:BaggageAllowance&gt;
                  &lt;/air:FareInfo&gt;
                  &lt;air:BookingInfo BookingCode="L" CabinClass="Economy" FareInfoRef="2wokqt8Q2BKAHSGAAAAAAA==" SegmentRef="RzO2Zt3R2BKAb+f9BAAAAA=="/&gt;
                  &lt;air:BookingInfo BookingCode="L" CabinClass="Economy" FareInfoRef="2wokqt8Q2BKAISGAAAAAAA==" SegmentRef="RzO2Zt3R2BKAd+f9BAAAAA=="/&gt;
                  &lt;air:BookingInfo BookingCode="L" CabinClass="Economy" FareInfoRef="2wokqt8Q2BKAJSGAAAAAAA==" SegmentRef="RzO2Zt3R2BKAf+f9BAAAAA=="/&gt;
                  &lt;air:BookingInfo BookingCode="L" CabinClass="Economy" FareInfoRef="2wokqt8Q2BKAKSGAAAAAAA==" SegmentRef="RzO2Zt3R2BKAh+f9BAAAAA=="/&gt;
                  &lt;air:TaxInfo Category="AE" Amount="OMR7.900" Key="RzO2Zt3R2BKAl+f9BAAAAA=="/&gt;
                  &lt;air:TaxInfo Category="F6" Amount="OMR3.700" Key="RzO2Zt3R2BKAm+f9BAAAAA=="/&gt;
                  &lt;air:TaxInfo Category="TP" Amount="OMR0.600" Key="RzO2Zt3R2BKAn+f9BAAAAA=="/&gt;
                  &lt;air:TaxInfo Category="ZR" Amount="OMR1.200" Key="RzO2Zt3R2BKAo+f9BAAAAA=="/&gt;
                  &lt;air:TaxInfo Category="WO" Amount="OMR2.300" Key="RzO2Zt3R2BKAp+f9BAAAAA=="/&gt;
                  &lt;air:TaxInfo Category="YQ" Amount="OMR54.600" Key="RzO2Zt3R2BKAq+f9BAAAAA=="/&gt;
                  &lt;air:TaxInfo Category="YR" Amount="OMR0.500" Key="RzO2Zt3R2BKAr+f9BAAAAA=="/&gt;
                  &lt;air:FareCalc&gt;DXB EY X/AUH EY COK Q DXBCOK3.00Q DXBCOK13.61Q DXBCOK6.80 125.24LLRM3AE/YV EY X/AUH EY DXB Q COKDXB3.00Q COKDXB6.80 46.29LLRM1AE/YV NUC204.74END ROE3.67275&lt;/air:FareCalc&gt;
                  &lt;air:PassengerType Code="ADT" BookingTravelerRef="gr8AVWGCR064r57Jt0+8bA=="&gt;
                      &lt;air:FareGuaranteeInfo GuaranteeDate="2019-06-18" GuaranteeType="Guaranteed"/&gt;
                  &lt;/air:PassengerType&gt;
                  &lt;common_v42_0:BookingTravelerRef Key="gr8AVWGCR064r57Jt0+8bA=="/&gt;
                  &lt;air:ChangePenalty&gt;
                      &lt;air:Amount&gt;OMR10.00&lt;/air:Amount&gt;
                  &lt;/air:ChangePenalty&gt;
                  &lt;air:CancelPenalty&gt;
                      &lt;air:Amount&gt;OMR21.00&lt;/air:Amount&gt;
                  &lt;/air:CancelPenalty&gt;
                  &lt;air:TicketingModifiersRef Key="2wokqt8Q2BKAhSGAAAAAAA=="/&gt;
              &lt;/air:AirPricingInfo&gt;
              &lt;air:TicketingModifiers PlatingCarrier="EY" Key="2wokqt8Q2BKAhSGAAAAAAA==" ElStat="A"&gt;
                  &lt;air:DocumentSelect IssueElectronicTicket="true"/&gt;
              &lt;/air:TicketingModifiers&gt;
          &lt;/air:AirReservation&gt;
          &lt;common_v42_0:AgencyInfo&gt;
              &lt;common_v42_0:AgentAction ActionType="Created" AgentCode="uAPI4777060768-7d89df01" BranchCode="P7099377" AgencyCode="S7099370" EventTime="2019-06-18T12:37:50.178+00:00"/&gt;
          &lt;/common_v42_0:AgencyInfo&gt;
          &lt;common_v42_0:FormOfPayment Key="jwt2mcK1Qp27I2xfpcCtAw==" Type="Cash" Reusable="false" ProfileKey="+gr4dnY9RJG00MovXy6nJg==" ElStat="A"&gt;
              &lt;common_v42_0:ProviderReservationInfoRef Key="2wokqt8Q2BKARSGAAAAAAA=="/&gt;
          &lt;/common_v42_0:FormOfPayment&gt;
      &lt;/universal:UniversalRecord&gt;
      &lt;air:AirSolutionChangedInfo ReasonCode="Schedule"&gt;
          &lt;air:AirPricingSolution Key="2wokqt8Q2BKAXRGAAAAAAA=="&gt;
              &lt;air:AirSegment Key="RzO2Zt3R2BKAb+f9BAAAAA==" Group="0" Carrier="EY" FlightNumber="5429" ProviderCode="1G" Origin="XNB" Destination="AUH" DepartureTime="2019-06-20T23:40:00.000+04:00" ArrivalTime="2019-06-21T01:20:00.000+04:00" FlightTime="100" TravelTime="100" Distance="67" ClassOfService="L" Equipment="BUS" Status="NN" ParticipantLevel="Secure Sell" LinkAvailability="true" PolledAvailabilityOption="O and D cache or polled status used with different local status" AvailabilitySource="S" AvailabilityDisplayType="Fare Specific Fare Quote Unbooked" OptionalServicesIndicator="false"&gt;
                  &lt;air:CodeshareInfo OperatingCarrier="EY"&gt;ETIHAD AIRWAYS&lt;/air:CodeshareInfo&gt;
                  &lt;air:FlightDetails Key="RzO2Zt3R2BKAc+f9BAAAAA==" Origin="XNB" Destination="AUH" DepartureTime="2019-06-20T23:40:00.000+04:00" ArrivalTime="2019-06-21T01:20:00.000+04:00" FlightTime="100" TravelTime="100" Distance="67"/&gt;
              &lt;/air:AirSegment&gt;
              &lt;air:AirSegment Key="RzO2Zt3R2BKAd+f9BAAAAA==" Group="0" Carrier="EY" FlightNumber="246" ProviderCode="1G" Origin="AUH" Destination="COK" DepartureTime="2019-06-21T02:55:00.000+04:00" ArrivalTime="2019-06-21T08:30:00.000+05:30" FlightTime="245" TravelTime="245" Distance="1749" ClassOfService="L" Equipment="321" Status="NN" ParticipantLevel="Secure Sell" LinkAvailability="true" PolledAvailabilityOption="O and D cache or polled status used with different local status" TravelOrder="1" AvailabilitySource="S" AvailabilityDisplayType="Fare Specific Fare Quote Unbooked" OptionalServicesIndicator="false"&gt;
                  &lt;air:CodeshareInfo OperatingCarrier="EY"&gt;ETIHAD AIRWAYS&lt;/air:CodeshareInfo&gt;
                  &lt;air:FlightDetails Key="RzO2Zt3R2BKAe+f9BAAAAA==" Origin="AUH" Destination="COK" DepartureTime="2019-06-21T02:55:00.000+04:00" ArrivalTime="2019-06-21T08:30:00.000+05:30" FlightTime="245" TravelTime="245" Distance="1749"/&gt;
              &lt;/air:AirSegment&gt;
              &lt;air:AirSegment Key="RzO2Zt3R2BKAf+f9BAAAAA==" Group="1" Carrier="EY" FlightNumber="247" ProviderCode="1G" Origin="COK" Destination="AUH" DepartureTime="2019-06-23T09:35:00.000+05:30" ArrivalTime="2019-06-23T12:05:00.000+04:00" FlightTime="240" TravelTime="240" Distance="1749" ClassOfService="L" Equipment="321" Status="NN" ParticipantLevel="Secure Sell" LinkAvailability="true" PolledAvailabilityOption="O and D cache or polled status used with different local status" TravelOrder="2" AvailabilitySource="S" AvailabilityDisplayType="Fare Specific Fare Quote Unbooked" OptionalServicesIndicator="false"&gt;
                  &lt;air:CodeshareInfo OperatingCarrier="EY"&gt;ETIHAD AIRWAYS&lt;/air:CodeshareInfo&gt;
                  &lt;air:FlightDetails Key="RzO2Zt3R2BKAg+f9BAAAAA==" Origin="COK" Destination="AUH" DepartureTime="2019-06-23T09:35:00.000+05:30" ArrivalTime="2019-06-23T12:05:00.000+04:00" FlightTime="240" TravelTime="240" Distance="1749"/&gt;
              &lt;/air:AirSegment&gt;
              &lt;air:AirSegment Key="RzO2Zt3R2BKAh+f9BAAAAA==" Group="1" Carrier="EY" FlightNumber="5426" ProviderCode="1G" Origin="AUH" Destination="XNB" DepartureTime="2019-06-23T20:00:00.000+04:00" ArrivalTime="2019-06-23T21:40:00.000+04:00" FlightTime="100" TravelTime="100" Distance="67" ClassOfService="L" Equipment="BUS" Status="NN" ParticipantLevel="Secure Sell" LinkAvailability="true" PolledAvailabilityOption="O and D cache or polled status used with different local status" TravelOrder="3" AvailabilitySource="S" AvailabilityDisplayType="Fare Specific Fare Quote Unbooked" OptionalServicesIndicator="false"&gt;
                  &lt;air:CodeshareInfo OperatingCarrier="EY"&gt;ETIHAD AIRWAYS&lt;/air:CodeshareInfo&gt;
                  &lt;air:FlightDetails Key="RzO2Zt3R2BKAi+f9BAAAAA==" Origin="AUH" Destination="XNB" DepartureTime="2019-06-23T20:00:00.000+04:00" ArrivalTime="2019-06-23T21:40:00.000+04:00" FlightTime="100" TravelTime="100" Distance="67"/&gt;
              &lt;/air:AirSegment&gt;
          &lt;/air:AirPricingSolution&gt;
      &lt;/air:AirSolutionChangedInfo&gt;
  &lt;/universal:AirCreateReservationRsp&gt;
  </code></pre>
  
  <p>What I actually need is a way to use single children() method with "air" and "universal" prefix. Is something like children('air,universal',true) possible?</p>