code: public HashSet<String> get(String key) throws VictimsException {
          key = hash(key);
          try {
              HashSet<String> cves = new HashSet<String>();
              String result = FileUtils.readFileToString(
                      FileUtils.getFile(location, key)).trim();
              for (String cve : StringUtils.split(result, ",")) {
                  cves.add(cve);
              }
              return cves;
          } catch (IOException e) {
              throw new VictimsException(String.format(
                      "Could not read contents of entry with key: %s", key), e);
          }
      }
docs: Get the CVEs mapped by a key
  
  @param key
  @return {@link Collection} of CVE strings
  @throws VictimsException