code: void fireChangeEventOnPicker(boolean force) {
  
          String val = m_editValue.toJSONString();
          if (force || (m_currentValue == null) || !val.equals(m_currentValue.toJSONString())) {
              m_currentValue = m_editValue.cloneValue();
              displayValue();
              ValueChangeEvent.fire(m_picker, val);
          }
      }
docs: Fires the value change event for the location picker.<p>
  
  @param force <code>true</code> to always fire the event