public static String getJemalloc() {
    if (_jemalloc == null) {
      detectJemalloc();
    }

    return _jemalloc;
  }
Gets jemalloc version.

@throws UnsatisfiedLinkError if the library cannot be found or dependent libraries are missing.
@return the jemalloc version
util/src/main/java/org/hyperledger/besu/util/platform/PlatformDetector.java