title: In Corda, how to define an InitiatedBy flow without defining the Initiating flow?
body: <p>I would like to create an <code>InitiatedBy</code> flow that is initiated by a flow class defined in another CorDapp. I do not have the source files of the other CorDapp, which is written and maintained by another company.</p>
  
  <p>How can I write the <code>IntiatedBy</code> flow in my CorDapp such that it can be initiated by an initiating flow defined in a different CorDapp?</p>