code: public Stream getStream(String sessionId, String streamId) throws OpenTokException {
          String stream = this.client.getStream(sessionId, streamId);
          try {
              return streamReader.readValue(stream);
          } catch (Exception e) {
              throw new RequestException("Exception mapping json: " + e.getMessage());
          }
      }
docs: Gets an {@link Stream} object for the given sessionId and streamId.
  
  @param sessionId The session ID.
  @param streamId The stream ID.
  @return The {@link Stream} object.