code: @Nonnull
      public String stripJvmRoute( @Nonnull final String sessionId ) {
          final int idxDot = sessionId.indexOf( '.' );
          return idxDot < 0 ? sessionId : sessionId.substring( 0, idxDot );
      }
docs: Remove the jvm route from the given session id if existing.
  
  @param sessionId
  the session id possibly including the memcached id and eventually the
  jvmRoute.
  @return the session id without the jvm route.