code: public void setExtractionCacheMaxAge(String extractionCacheMaxAge) {
  
          try {
              setExtractionCacheMaxAge(Float.parseFloat(extractionCacheMaxAge));
          } catch (NumberFormatException e) {
              LOG.error(
                  Messages.get().getBundle().key(
                      Messages.LOG_PARSE_EXTRACTION_CACHE_AGE_FAILED_2,
                      extractionCacheMaxAge,
                      new Float(DEFAULT_EXTRACTION_CACHE_MAX_AGE)),
                  e);
              setExtractionCacheMaxAge(DEFAULT_EXTRACTION_CACHE_MAX_AGE);
          }
      }
docs: Sets the maximum age a text extraction result is kept in the cache (in hours) as a String.<p>
  
  @param extractionCacheMaxAge the maximum age for a text extraction result to set