Program: 93512
Project: 93512
Buggy source:
/** 
 * @param href
 * @param exchange
 * @param context
 * @param data
 * @return
 * @throws IllegalQueryParamenterException
 */
public Representation getRepresentation(String href,HttpServerExchange exchange,RequestContext context,DBObject data) throws IllegalQueryParamenterException {
  Representation rep;
  Object id=data.get("String_Node_Str");
  String _docIdType=null;
  rep=new Representation(URLUtils.getReferenceLink(context,URLUtils.getParentPath(href),id));
  rep.addProperty("String_Node_Str",context.getType().name());
  data.keySet().stream().forEach((key) -> rep.addProperty(key,data.get(key)));
  TreeMap<String,String> links;
  links=getRelationshipsLinks(rep,context,data);
  if (links != null) {
    links.keySet().stream().forEach((k) -> {
      rep.addLink(new Link(k,links.get(k)));
    }
);
  }
  String requestPath=URLUtils.removeTrailingSlashes(exchange.getRequestPath());
  if (isBinaryFile(data)) {
    if (_docIdType == null) {
      rep.addLink(new Link("String_Node_Str",String.format("String_Node_Str",href,RequestContext.BINARY_CONTENT)));
    }
 else {
      rep.addLink(new Link("String_Node_Str",String.format("String_Node_Str",href,RequestContext.BINARY_CONTENT,_docIdType)));
    }
    if (context.isParentAccessible()) {
      rep.addLink(new Link("String_Node_Str",URLUtils.getParentPath(requestPath)));
    }
    rep.addLink(new Link("String_Node_Str",URLUtils.getParentPath(requestPath) + "String_Node_Str",true));
  }
 else {
    if (context.isParentAccessible()) {
      rep.addLink(new Link("String_Node_Str",URLUtils.getParentPath(requestPath)));
    }
    rep.addLink(new Link("String_Node_Str",URLUtils.getParentPath(requestPath) + "String_Node_Str",true));
  }
  rep.addLink(new Link("String_Node_Str","String_Node_Str",Configuration.RESTHEART_ONLINE_DOC_URL + "String_Node_Str",true),true);
  return rep;
}

Fixed version (ground truth):
/** 
 * @param href
 * @param exchange
 * @param context
 * @param data
 * @return
 * @throws IllegalQueryParamenterException
 */
public Representation getRepresentation(String href,HttpServerExchange exchange,RequestContext context,DBObject data) throws IllegalQueryParamenterException {
  Representation rep;
  Object id=data.get("String_Node_Str");
  String _docIdType=null;
  rep=new Representation(URLUtils.getReferenceLink(context,URLUtils.getParentPath(href),id));
  rep.addProperty("String_Node_Str",context.getType().name());
  data.keySet().stream().forEach((key) -> rep.addProperty(key,data.get(key)));
  TreeMap<String,String> links;
  links=getRelationshipsLinks(rep,context,data);
  if (links != null) {
    links.keySet().stream().forEach((k) -> {
      rep.addLink(new Link(k,links.get(k)));
    }
);
  }
  String requestPath=URLUtils.removeTrailingSlashes(exchange.getRequestPath());
  String parentPath;
  if (TYPE.COLLECTION.equals(context.getType()) || TYPE.FILES_BUCKET.equals(context.getType())) {
    parentPath=requestPath;
  }
 else {
    parentPath=URLUtils.getParentPath(requestPath);
  }
  if (isBinaryFile(data)) {
    if (_docIdType == null) {
      rep.addLink(new Link("String_Node_Str",String.format("String_Node_Str",href,RequestContext.BINARY_CONTENT)));
    }
 else {
      rep.addLink(new Link("String_Node_Str",String.format("String_Node_Str",href,RequestContext.BINARY_CONTENT,_docIdType)));
    }
    if (context.isParentAccessible()) {
      rep.addLink(new Link("String_Node_Str",parentPath));
    }
    rep.addLink(new Link("String_Node_Str",parentPath + "String_Node_Str",true));
  }
 else {
    if (context.isParentAccessible()) {
      rep.addLink(new Link("String_Node_Str",parentPath));
    }
    rep.addLink(new Link("String_Node_Str",parentPath + "String_Node_Str",true));
  }
  rep.addLink(new Link("String_Node_Str","String_Node_Str",Configuration.RESTHEART_ONLINE_DOC_URL + "String_Node_Str",true),true);
  return rep;
}