code: protected I_CmsSearchConfigurationFacetField parseFieldFacet(final String pathPrefix) {
  
          try {
              final String field = parseMandatoryStringValue(pathPrefix + XML_ELEMENT_FACET_FIELD);
              final String name = parseOptionalStringValue(pathPrefix + XML_ELEMENT_FACET_NAME);
              final String label = parseOptionalStringValue(pathPrefix + XML_ELEMENT_FACET_LABEL);
              final Integer minCount = parseOptionalIntValue(pathPrefix + XML_ELEMENT_FACET_MINCOUNT);
              final Integer limit = parseOptionalIntValue(pathPrefix + XML_ELEMENT_FACET_LIMIT);
              final String prefix = parseOptionalStringValue(pathPrefix + XML_ELEMENT_FACET_PREFIX);
              final String sorder = parseOptionalStringValue(pathPrefix + XML_ELEMENT_FACET_ORDER);
              I_CmsSearchConfigurationFacet.SortOrder order;
              try {
                  order = I_CmsSearchConfigurationFacet.SortOrder.valueOf(sorder);
              } catch (@SuppressWarnings("unused") final Exception e) {
                  order = null;
              }
              final String filterQueryModifier = parseOptionalStringValue(
                  pathPrefix + XML_ELEMENT_FACET_FILTERQUERYMODIFIER);
              final Boolean isAndFacet = parseOptionalBooleanValue(pathPrefix + XML_ELEMENT_FACET_ISANDFACET);
              final List<String> preselection = parseOptionalStringValues(pathPrefix + XML_ELEMENT_FACET_PRESELECTION);
              final Boolean ignoreAllFacetFilters = parseOptionalBooleanValue(
                  pathPrefix + XML_ELEMENT_FACET_IGNOREALLFACETFILTERS);
              return new CmsSearchConfigurationFacetField(
                  field,
                  name,
                  minCount,
                  limit,
                  prefix,
                  label,
                  order,
                  filterQueryModifier,
                  isAndFacet,
                  preselection,
                  ignoreAllFacetFilters);
          } catch (final Exception e) {
              LOG.error(
                  Messages.get().getBundle().key(
                      Messages.ERR_FIELD_FACET_MANDATORY_KEY_MISSING_1,
                      XML_ELEMENT_FACET_FIELD),
                  e);
              return null;
          }
      }
docs: Reads the configuration of a field facet.
  @param pathPrefix The XML Path that leads to the field facet configuration, or <code>null</code> if the XML was not correctly structured.
  @return The read configuration, or <code>null</code> if the XML was not correctly structured.