code: public void removeInstanceId() {
  
          Map<String, String> newSettings = new HashMap<String, String>(m_individualSettings);
          newSettings.remove(CmsContainerElement.ELEMENT_INSTANCE_ID);
          m_individualSettings = Collections.unmodifiableMap(newSettings);
          m_editorHash = m_elementId.toString() + getSettingsHash();
      }
docs: Removes the instance id.<p>