/**
* This method deletes all occurences of the specified element from
* the expected error codes stack.
*
* @param mixed $error_code error code that should be deleted
* @return mixed list of error codes that were deleted or error
*
* @uses PEAR::delExpect()
*/
public function delExpect($error_code)
{
return $this->pear->delExpect($error_code);
}