docs: @Override
  	public boolean eIsSet(int featureID) {
  		switch (featureID) {
  			case DroolsPackage.DOCUMENT_ROOT__MIXED:
  				return mixed != null && !mixed.isEmpty();
  			case DroolsPackage.DOCUMENT_ROOT__XMLNS_PREFIX_MAP:
  				return xMLNSPrefixMap != null && !xMLNSPrefixMap.isEmpty();
  			case DroolsPackage.DOCUMENT_ROOT__XSI_SCHEMA_LOCATION:
  				return xSISchemaLocation != null && !xSISchemaLocation.isEmpty();
  			case DroolsPackage.DOCUMENT_ROOT__GLOBAL:
  				return getGlobal() != null;
  			case DroolsPackage.DOCUMENT_ROOT__IMPORT:
  				return getImport() != null;
  			case DroolsPackage.DOCUMENT_ROOT__META_DATA:
  				return getMetaData() != null;
  			case DroolsPackage.DOCUMENT_ROOT__ON_ENTRY_SCRIPT:
  				return getOnEntryScript() != null;
  			case DroolsPackage.DOCUMENT_ROOT__ON_EXIT_SCRIPT:
  				return getOnExitScript() != null;
  			case DroolsPackage.DOCUMENT_ROOT__PACKAGE_NAME:
  				return PACKAGE_NAME_EDEFAULT == null ? packageName != null : !PACKAGE_NAME_EDEFAULT.equals(packageName);
  			case DroolsPackage.DOCUMENT_ROOT__PRIORITY:
  				return PRIORITY_EDEFAULT == null ? priority != null : !PRIORITY_EDEFAULT.equals(priority);
  			case DroolsPackage.DOCUMENT_ROOT__RULE_FLOW_GROUP:
  				return RULE_FLOW_GROUP_EDEFAULT == null ? ruleFlowGroup != null : !RULE_FLOW_GROUP_EDEFAULT.equals(ruleFlowGroup);
  			case DroolsPackage.DOCUMENT_ROOT__TASK_NAME:
  				return TASK_NAME_EDEFAULT == null ? taskName != null : !TASK_NAME_EDEFAULT.equals(taskName);
  			case DroolsPackage.DOCUMENT_ROOT__VERSION:
  				return VERSION_EDEFAULT == null ? version != null : !VERSION_EDEFAULT.equals(version);
  		}
  		return super.eIsSet(featureID);
  	}