Need method call feature for milo client component

I'm using Apache camel Milo component for one of my project. Where I'm  having a use-case scenario in which i need to CALL THE METHOD (for example START(), STOP()) with some input parameter (ex:START("APPLICATIONNAME") ) which returns some output parameter. (StatusCode, or ErrorCode). Please note that the input and output parameter can be complex data type (Not just int/double... ).
 
[ SceenShot of my sample server ]

 
I have tested the read node functionality with the node id and the namespace. The milo-client component will be more better suited if it provide the call functionality.
 
Please do look into it.