/**
  * Gets a list of <tt>payload-type</tt> elements defined by XEP-0167: Jingle RTP Sessions added
  * to this <tt>channel</tt>.
  *
  * @return an unmodifiable <tt>List</tt> of <tt>payload-type</tt> elements defined by XEP-0167:
  *     Jingle RTP Sessions added to this <tt>channel</tt>
  */
 public List<PayloadTypePacketExtension> getPayloadTypes() {
   return Collections.unmodifiableList(payloadTypes);
 }
 /**
  * Gets a list of the <tt>SctpConnection</tt>s included into/associated with this
  * <tt>Content</tt>.
  *
  * @return an unmodifiable <tt>List</tt> of the <tt>SctpConnection</tt>s included
  *     into/associated with this <tt>Content</tt>
  */
 public List<SctpConnection> getSctpConnections() {
   return Collections.unmodifiableList(sctpConnections);
 }
 /**
  * Returns a list of the <tt>Content</tt>s included into this <tt>conference</tt> IQ.
  *
  * @return an unmodifiable <tt>List</tt> of the <tt>Content</tt>s included into this
  *     <tt>conference</tt> IQ
  */
 public List<Content> getContents() {
   return Collections.unmodifiableList(contents);
 }
 /**
  * Gets a list of the <tt>Channel</tt> included into/associated with this <tt>Content</tt>.
  *
  * @return an unmodifiable <tt>List</tt> of the <tt>Channel</tt>s included into/associated with
  *     this <tt>Content</tt>
  */
 public List<Channel> getChannels() {
   return Collections.unmodifiableList(channels);
 }