1 message input is defined.
<portlet-preferences> <preference> <name>MsgInput1Name</name> <value>c_val</value> </preference> <preference> <name>MsgInput1SourceName</name> <value>b_val</value> </preference> <preference> <name>MsgInput1SourceNamespace</name> <value></value> </preference> </portlet-preferences>