code: private void setAccessors(int bias, JMFSchema schema) {
      int nextBoxBias = bias + fields.length + variants.length;
      for (int i = 0; i < fields.length; i++) {
        JSField field = fields[i];
        if (field instanceof JSVariant) {
          JSchema boxed = (JSchema) ((JSVariant)field).getBoxed();
          boxed.setAccessors(nextBoxBias, schema);
          // Copy accessors from the top type of the box to the visible variant
          JSVariant boxVar = (JSVariant) boxed.getJMFType();
          field.setAccessor(boxVar.getAccessor(boxed), boxed);
          field.setAccessor(boxVar.getAccessor(schema), schema);
          ((JSVariant) field).setBoxAccessor(i + bias, schema);
          nextBoxBias += boxed.getAccessorCount();
        }
        else
          field.setAccessor(i + bias, schema);
      }
      for (int i = 0; i < variants.length; i++)
        variants[i].setAccessor(i + bias + fields.length, schema);
    }
docs: permits retrieval of accessors relative to box schemas as well as the public schema.