private VariableDescriptor[] getDescriptorMapping() {
    VariableDescriptor[] array = new VariableDescriptor[myVariableMapping.size() + 1];
    for (var entry : myVariableMapping.entrySet()) {
      array[entry.getValue()] = entry.getKey();
    }
    return array;
  }
private VariableDescriptor[] getDescriptorMapping()