Program: 32760
Project: 32760
Buggy source:
public DefaultEntity executeBatch(List<BatchPart> callStack,String defaultDataBase) throws ArangoException {
  String body="String_Node_Str";
  Map<String,InvocationObject> resolver=new HashMap<String,InvocationObject>();
  for (  BatchPart bp : callStack) {
    body+="String_Node_Str" + delimiter + newline;
    body+="String_Node_Str" + newline;
    body+="String_Node_Str" + bp.getId() + newline+ newline;
    body+=bp.getMethod() + "String_Node_Str" + bp.getUrl()+ "String_Node_Str"+ "String_Node_Str"+ newline;
    body+="String_Node_Str" + this.configure.getArangoHost().getHost() + newline+ newline;
    body+=bp.getBody() == null ? "String_Node_Str" : bp.getBody() + newline + newline;
    resolver.put(bp.getId(),bp.getInvocationObject());
  }
  body+="String_Node_Str" + delimiter + "String_Node_Str";
  Map<String,Object> headers=new HashMap<String,Object>();
  headers.put("String_Node_Str","String_Node_Str" + delimiter);
  HttpResponseEntity res=httpManager.doPostWithHeaders(createEndpointUrl(defaultDataBase,"String_Node_Str"),null,null,headers,body);
  String data=res.getText();
  res.setContentType("String_Node_Str");
  String currentId=null;
  Boolean fetchText=false;
  res.setText("String_Node_Str");
  List<BatchResponseEntity> batchResponseEntityList=new ArrayList<BatchResponseEntity>();
  BatchResponseEntity batchResponseEntity=new BatchResponseEntity(null);
  String t=null;
  for (  String line : data.split(newline)) {
    line.trim();
    line.replaceAll("String_Node_Str","String_Node_Str");
    if (line.indexOf("String_Node_Str") != -1) {
      if (currentId != null) {
        batchResponseEntityList.add(batchResponseEntity);
      }
      currentId=line.split("String_Node_Str")[1].trim();
      batchResponseEntity=new BatchResponseEntity(resolver.get(currentId));
      batchResponseEntity.setRequestId(currentId);
      continue;
    }
    if (line.indexOf("String_Node_Str") != -1 && line.indexOf("String_Node_Str") == -1) {
      String ct=line.replaceAll("String_Node_Str","String_Node_Str");
      batchResponseEntity.httpResponseEntity.setContentType(ct);
      continue;
    }
    if (line.indexOf("String_Node_Str") != -1) {
      String etag=line.split("String_Node_Str")[1].replaceAll("String_Node_Str","String_Node_Str").trim();
      batchResponseEntity.httpResponseEntity.setEtag(Long.parseLong(etag));
      continue;
    }
    if (line.indexOf("String_Node_Str") != -1) {
      batchResponseEntity.httpResponseEntity.setStatusCode(Integer.valueOf(line.split("String_Node_Str")[1]));
      continue;
    }
    if (line.indexOf("String_Node_Str") != -1) {
      fetchText=true;
      t="String_Node_Str";
      continue;
    }
    if (line.indexOf("String_Node_Str" + delimiter) != -1 && resolver.get(currentId) != null) {
      fetchText=false;
      if (!batchResponseEntity.httpResponseEntity.isDumpResponse()) {
        batchResponseEntity.httpResponseEntity.setText(t);
      }
 else {
        InputStream is=new ByteArrayInputStream(t.getBytes());
        batchResponseEntity.httpResponseEntity.setStream(is);
      }
      continue;
    }
    if (fetchText && !line.equals(newline)) {
      t+=line;
    }
  }
  if (batchResponseEntity.getHttpResponseEntity() != null) {
    batchResponseEntityList.add(batchResponseEntity);
  }
  BatchResponseListEntity batchResponseListEntityTmp=new BatchResponseListEntity();
  batchResponseListEntityTmp.setBatchResponseEntities(batchResponseEntityList);
  this.batchResponseListEntity=batchResponseListEntityTmp;
  return createEntity(res,DefaultEntity.class,null,false);
}

Fixed version (ground truth):
public DefaultEntity executeBatch(List<BatchPart> callStack,String defaultDataBase) throws ArangoException {
  StringBuilder sb=new StringBuilder();
  Map<String,InvocationObject> resolver=new HashMap<String,InvocationObject>();
  for (  BatchPart bp : callStack) {
    addBatchPart(sb,bp);
    resolver.put(bp.getId(),bp.getInvocationObject());
  }
  sb.append(DELIMITER + "String_Node_Str");
  Map<String,Object> headers=new HashMap<String,Object>();
  headers.put("String_Node_Str","String_Node_Str" + BOUNDARY);
  HttpResponseEntity res=httpManager.doPostWithHeaders(createEndpointUrl(defaultDataBase,"String_Node_Str"),null,null,headers,sb.toString());
  String data=res.getText();
  res.setContentType("String_Node_Str");
  res.setText("String_Node_Str");
  List<BatchResponseEntity> batchResponseEntityList=handleResponse(resolver,data);
  batchResponseListEntity=new BatchResponseListEntity();
  batchResponseListEntity.setBatchResponseEntities(batchResponseEntityList);
  return createEntity(res,DefaultEntity.class,null,false);
}