Program: 105058
Project: 105058
Buggy source:
public static JSONObject serializeChannel(ColibriConferenceIQ.Channel channel){
  JSONObject jsonObject;
  if (channel == null) {
    jsonObject=null;
  }
 else {
    MediaDirection direction=channel.getDirection();
    String id=channel.getID();
    Integer lastN=channel.getLastN();
    List<PayloadTypePacketExtension> payloadTypes=channel.getPayloadTypes();
    Integer receivingSimulcastLayer=channel.getReceivingSimulcastLayer();
    RTPLevelRelayType rtpLevelRelayType=channel.getRTPLevelRelayType();
    List<SourcePacketExtension> sources=channel.getSources();
    List<SourceGroupPacketExtension> sourceGroups=channel.getSourceGroups();
    int[] ssrcs=channel.getSSRCs();
    jsonObject=serializeChannelCommon(channel);
    if (direction != null) {
      jsonObject.put(ColibriConferenceIQ.Channel.DIRECTION_ATTR_NAME,direction.toString());
    }
    if (id != null) {
      jsonObject.put(ColibriConferenceIQ.Channel.ID_ATTR_NAME,id);
    }
    if (lastN != null) {
      jsonObject.put(ColibriConferenceIQ.Channel.LAST_N_ATTR_NAME,lastN);
    }
    if (lastN != null) {
      jsonObject.put(ColibriConferenceIQ.Channel.RECEIVING_SIMULCAST_LAYER,receivingSimulcastLayer);
    }
    if ((payloadTypes != null) && !payloadTypes.isEmpty()) {
      jsonObject.put(PAYLOAD_TYPES,serializePayloadTypes(payloadTypes));
    }
    if (rtpLevelRelayType != null) {
      jsonObject.put(ColibriConferenceIQ.Channel.RTP_LEVEL_RELAY_TYPE_ATTR_NAME,rtpLevelRelayType.toString());
    }
    if ((sources != null) && !sources.isEmpty())     jsonObject.put(SOURCES,serializeSources(sources));
    if ((sourceGroups != null) && !sourceGroups.isEmpty()) {
      jsonObject.put(SOURCE_GROUPS,serializeSourceGroups(sourceGroups));
    }
    if ((ssrcs != null) && (ssrcs.length > 0))     jsonObject.put(SSRCS,serializeSSRCs(ssrcs));
  }
  return jsonObject;
}

Fixed version (ground truth):
public static JSONObject serializeChannel(ColibriConferenceIQ.Channel channel){
  JSONObject jsonObject;
  if (channel == null) {
    jsonObject=null;
  }
 else {
    MediaDirection direction=channel.getDirection();
    Integer lastN=channel.getLastN();
    List<PayloadTypePacketExtension> payloadTypes=channel.getPayloadTypes();
    Integer receivingSimulcastLayer=channel.getReceivingSimulcastLayer();
    RTPLevelRelayType rtpLevelRelayType=channel.getRTPLevelRelayType();
    List<SourcePacketExtension> sources=channel.getSources();
    List<SourceGroupPacketExtension> sourceGroups=channel.getSourceGroups();
    int[] ssrcs=channel.getSSRCs();
    jsonObject=serializeChannelCommon(channel);
    if (direction != null) {
      jsonObject.put(ColibriConferenceIQ.Channel.DIRECTION_ATTR_NAME,direction.toString());
    }
    if (lastN != null) {
      jsonObject.put(ColibriConferenceIQ.Channel.LAST_N_ATTR_NAME,lastN);
    }
    if (lastN != null) {
      jsonObject.put(ColibriConferenceIQ.Channel.RECEIVING_SIMULCAST_LAYER,receivingSimulcastLayer);
    }
    if ((payloadTypes != null) && !payloadTypes.isEmpty()) {
      jsonObject.put(PAYLOAD_TYPES,serializePayloadTypes(payloadTypes));
    }
    if (rtpLevelRelayType != null) {
      jsonObject.put(ColibriConferenceIQ.Channel.RTP_LEVEL_RELAY_TYPE_ATTR_NAME,rtpLevelRelayType.toString());
    }
    if ((sources != null) && !sources.isEmpty())     jsonObject.put(SOURCES,serializeSources(sources));
    if ((sourceGroups != null) && !sourceGroups.isEmpty()) {
      jsonObject.put(SOURCE_GROUPS,serializeSourceGroups(sourceGroups));
    }
    if ((ssrcs != null) && (ssrcs.length > 0))     jsonObject.put(SSRCS,serializeSSRCs(ssrcs));
  }
  return jsonObject;
}