Program: 13260
Project: 13260
Buggy source:
@Override public void readInstance(ServerContext context,String resourceId,ReadRequest request,ResultHandler<Resource> handler){
  try {
    Authentication.setAuthenticatedUserId(context.asContext(SecurityContext.class).getAuthenticationId());
    String processDefinitionId=((RouterContext)context).getUriTemplateVariables().get("String_Node_Str");
    ProcessDefinitionEntity procdef=(ProcessDefinitionEntity)((RepositoryServiceImpl)processEngine.getRepositoryService()).getDeployedProcessDefinition(processDefinitionId);
    TaskDefinition taskDefinition=procdef.getTaskDefinitions().get(resourceId);
    Map value=mapper.convertValue(taskDefinition,HashMap.class);
    Resource r=new Resource(taskDefinition.getKey(),null,new JsonValue(value));
    FormService formService=processEngine.getFormService();
    String taskFormKey=formService.getTaskFormKey(processDefinitionId,resourceId);
    if (taskFormKey != null) {
      r.getContent().add(ActivitiConstants.ACTIVITI_FORMRESOURCEKEY,taskFormKey);
      ByteArrayInputStream startForm=(ByteArrayInputStream)((RepositoryServiceImpl)processEngine.getRepositoryService()).getResourceAsStream(procdef.getDeploymentId(),taskFormKey);
      Reader reader=new InputStreamReader(startForm);
      try {
        Scanner s=new Scanner(reader).useDelimiter("String_Node_Str");
        String formTemplate=s.hasNext() ? s.next() : "String_Node_Str";
        r.getContent().add(ActivitiConstants.ACTIVITI_FORMGENERATIONTEMPLATE,formTemplate);
      }
  finally {
        reader.close();
      }
    }
    handler.handleResult(r);
  }
 catch (  ActivitiObjectNotFoundException ex) {
    handler.handleError(new NotFoundException(ex.getMessage()));
  }
catch (  IllegalArgumentException ex) {
    handler.handleError(new InternalServerErrorException(ex.getMessage(),ex));
  }
catch (  Exception ex) {
    handler.handleError(new InternalServerErrorException(ex.getMessage(),ex));
  }
}

Fixed version (ground truth):
@Override public void readInstance(ServerContext context,String resourceId,ReadRequest request,ResultHandler<Resource> handler){
  try {
    Authentication.setAuthenticatedUserId(context.asContext(SecurityContext.class).getAuthenticationId());
    String processDefinitionId=((RouterContext)context).getUriTemplateVariables().get("String_Node_Str");
    ProcessDefinitionEntity procdef=(ProcessDefinitionEntity)((RepositoryServiceImpl)processEngine.getRepositoryService()).getDeployedProcessDefinition(processDefinitionId);
    TaskDefinition taskDefinition=procdef.getTaskDefinitions().get(resourceId);
    if (taskDefinition != null) {
      Map value=mapper.convertValue(taskDefinition,HashMap.class);
      Resource r=new Resource(taskDefinition.getKey(),null,new JsonValue(value));
      FormService formService=processEngine.getFormService();
      String taskFormKey=formService.getTaskFormKey(processDefinitionId,resourceId);
      if (taskFormKey != null) {
        r.getContent().add(ActivitiConstants.ACTIVITI_FORMRESOURCEKEY,taskFormKey);
        ByteArrayInputStream startForm=(ByteArrayInputStream)((RepositoryServiceImpl)processEngine.getRepositoryService()).getResourceAsStream(procdef.getDeploymentId(),taskFormKey);
        Reader reader=new InputStreamReader(startForm);
        try {
          Scanner s=new Scanner(reader).useDelimiter("String_Node_Str");
          String formTemplate=s.hasNext() ? s.next() : "String_Node_Str";
          r.getContent().add(ActivitiConstants.ACTIVITI_FORMGENERATIONTEMPLATE,formTemplate);
        }
  finally {
          reader.close();
        }
      }
      handler.handleResult(r);
    }
 else {
      handler.handleError(new NotFoundException("String_Node_Str" + resourceId + "String_Node_Str"));
    }
  }
 catch (  ActivitiObjectNotFoundException ex) {
    handler.handleError(new NotFoundException(ex.getMessage()));
  }
catch (  IllegalArgumentException ex) {
    handler.handleError(new InternalServerErrorException(ex.getMessage(),ex));
  }
catch (  Exception ex) {
    handler.handleError(new InternalServerErrorException(ex.getMessage(),ex));
  }
}