code: def identifyApplication(self, unProcessId, pchAppKey):
          
  
          fn = self.function_table.identifyApplication
          result = fn(unProcessId, pchAppKey)
          return result
docs: Identifies a running application. OpenVR can't always tell which process started in response
          to a URL. This function allows a URL handler (or the process itself) to identify the app key 
          for the now running application. Passing a process ID of 0 identifies the calling process. 
          The application must be one that's known to the system via a call to AddApplicationManifest.