Program: 13221
Project: 13221
Buggy source:
/** 
 * Deletes the specified object from the object set.
 * @param resourceName the identifier of the resource to be deleted.
 * @param rev    the version of the object to delete or {@code null} if not provided.
 * @throws NotFoundException           if the specified object could not be found.
 * @throws ForbiddenException          if access to the object is forbidden.
 * @throws ConflictException           if version is required but is {@code null}.
 * @throws PreconditionFailedException if version did not match the existing object in the set.
 */
public void delete(ResourceName resourceName,String rev) throws ResourceException {
  logger.debug("String_Node_Str",resourceName.toString(),rev);
  if (resourceName.isEmpty()) {
    throw new BadRequestException("String_Node_Str");
  }
  try {
    Configuration config=findExistingConfiguration(new ParsedId(resourceName));
    Dictionary existingConfig=config.getProperties();
    if (existingConfig == null) {
      throw new NotFoundException("String_Node_Str" + resourceName.toString() + "String_Node_Str");
    }
    config.delete();
    logger.debug("String_Node_Str",resourceName.toString());
  }
 catch (  ResourceException ex) {
    throw ex;
  }
catch (  Exception ex) {
    logger.warn("String_Node_Str",resourceName.toString(),ex);
    throw new InternalServerErrorException("String_Node_Str" + resourceName.toString() + "String_Node_Str"+ ex.getMessage(),ex);
  }
}

Fixed version (ground truth):
/** 
 * Deletes the specified object from the object set.
 * @param resourceName the identifier of the resource to be deleted.
 * @param rev    the version of the object to delete or {@code null} if not provided.
 * @return the deleted object.
 * @throws NotFoundException           if the specified object could not be found.
 * @throws ForbiddenException          if access to the object is forbidden.
 * @throws ConflictException           if version is required but is {@code null}.
 * @throws PreconditionFailedException if version did not match the existing object in the set.
 */
public JsonValue delete(ResourceName resourceName,String rev) throws ResourceException {
  logger.debug("String_Node_Str",resourceName.toString(),rev);
  if (resourceName.isEmpty()) {
    throw new BadRequestException("String_Node_Str");
  }
  try {
    Configuration config=findExistingConfiguration(new ParsedId(resourceName));
    if (config == null) {
      throw new NotFoundException("String_Node_Str" + resourceName.toString() + "String_Node_Str");
    }
    Dictionary existingConfig=config.getProperties();
    JSONEnhancedConfig enhancedConfig=new JSONEnhancedConfig();
    JsonValue value=enhancedConfig.getConfiguration(existingConfig,resourceName.toString(),false);
    if (existingConfig == null) {
      throw new NotFoundException("String_Node_Str" + resourceName.toString() + "String_Node_Str");
    }
    config.delete();
    logger.debug("String_Node_Str",resourceName.toString());
    return value;
  }
 catch (  ResourceException ex) {
    throw ex;
  }
catch (  Exception ex) {
    logger.warn("String_Node_Str",resourceName.toString(),ex);
    throw new InternalServerErrorException("String_Node_Str" + resourceName.toString() + "String_Node_Str"+ ex.getMessage(),ex);
  }
}