Alguem sabe como enviar esse xml via POST <purchaseService xmlns="http://br.com.getnet.ecommerce.ws.service/"> <!--Optional:--> <arg0 xmlns=""> <authentication> <username>string</username> <password>string</password> <merchantID>string</merchantID> </authentication> <purchases> <!--Zero or more repetitions:--> <purchase> <terminalID>string</terminalID> <merchantTrackID>string</merchantTrackID> <amount>string</amount> <currencycode>string</currencycode> <instType>string</instType> <!--Optional:--> <instNum>string</instNum> <card> <number>string</number> <!--Optional:--> <cvv2>string</cvv2> <expiryMonth>string</expiryMonth> <expiryYear>string</expiryYear> <holderName>string</holderName> </card> <!--Optional:--> <userDefinedField> <!--Optional:--> <udf1>string</udf1> <!--Optional:--> <udf2>string</udf2> <!--Optional:--> <udf3>string</udf3> <!--Optional:--> <udf4>string</udf4> <!--Optional:--> <udf5>string</udf5> </userDefinedField> <!--Optional:--> <tranMCC>string</tranMCC> <!--Optional:--> <softDescriptor>string</softDescriptor> </purchase> </purchases> </arg0> </purchaseService>