message: fixed xml syntax errors
diff: </serializables>
  <commands>
  <command component="apiTester" mnemonic="TEST_CMD_1" opcode="0x01">
  - <args/>
  </command>
  <command component="apiTester" mnemonic="TEST_CMD_2" opcode="0x02">
  <args>
  <arg name="arg1" type="U32"/>
  <arg name="arg2" type="U32"/>
  - <args/>
  + </args>
  </command>
  <command component="apiTester" mnemonic="TEST_CMD_3" opcode="0x03">
  <args>
  <event component="apiTester" name="Command Received" id="0x01" severity="DIAGNOSTIC" format_string="Received a cmd with opcode %d">
  <args>
  <arg name="opcode" type="U32"/>
  - <args/>
  + </args>
  </event>
  <event component="apiTester" name="HistorySizeUpdate" id="0x2" severity="DIAGNOSTIC" format_string="The history sizes are now: EVR(%d) CMD(%d) CH(%d)">
  <args>
  </args>
  </event>
  <event component="apiTester" name="SeverityCommand" id="0x3" severity="COMMAND" format_string="Unit Test EVR with COMMAND Severity">
  - </args>
  </event>
  <event component="apiTester" name="SeverityActivityLO" id="0x4" severity="ACTIVITY_LO" format_string="Unit Test EVR with ACTIVITY_LO Severity">
  - </args>
  </event>
  <event component="apiTester" name="SeverityActivityHI" id="0x5" severity="ACTIVITY_HI" format_string="Unit Test EVR with ACTIVITY_HI Severity">
  - </args>
  </event>
  <event component="apiTester" name="SeverityWarningLO" id="0x6" severity="WARNING_LO" format_string="Unit Test EVR with WARNING_LO Severity">
  - </args>
  </event>
  <event component="apiTester" name="SeverityWarningHI" id="0x7" severity="WARNING_HI" format_string="Unit Test EVR with WARNING_HI Severity">
  - </args>
  </event>
  <event component="apiTester" name="SeverityDiagnostic" id="0x8" severity="DIAGNOSTIC" format_string="Unit Test EVR with DIAGNOSTIC Severity">
  - </args>
  </event>
  <event component="apiTester" name="SeverityFatal" id="0x9" severity="FATAL" format_string="Unit Test EVR with FATAL Severity">
  - </args>
  </event>
  </events>
  <channels>
  