Check for type optUncall, which is wanted by the default uncaller list

  As E-on-CL has no special concept of type importing, all of the objects that <type> can uncall in Java E are instead accessible via <import>. <type> could act as a PackageLoader on <import>, but there is nothing that needs it.

  ? [<type>.optUncall([])]
  # value: [null]
  
  ? [<type>.optUncall(String)]
  # value: [null]

Coarse check

  ? def deSubgraphKit := <elib:serial.deSubgraphKit>
  # value: <deSubgraphKit>
  
  ? def recognizer := deSubgraphKit.getDefaultRecognizer()
  # value: <unevaler>
  
  ? def deepCopy(o) :any { 
  >   return recognizer.recognize(o, deSubgraphKit.makeBuilder())
  > }
  # value: <deepCopy>
  
  ? var a := 0
  # value: 0
  
  ? def &b := deepCopy(&a)
  # value: <var 0>
  
  ? &a == &b
  # value: false
  
  ? a == b
  # value: true
  
  ? a := 1
  # value: 1
  
  ? [a, b]
  # value: [1, 0]

  ? b := 2
  # value: 2
  
  ? [a, b]
  # value: [1, 2]