code: public boolean qualifyForComparison(Element control, Element test) {
          return ElementSelectors.byName.canBeCompared(control, test);
      }
docs: Determine whether two elements qualify for further Difference comparison.
  @param control
  @param test
  @return true if the two elements qualify for further comparison based on
  their  similar namespace URI and non-namespaced tag name,
  false otherwise