def is_marked?(id, ignore_errors = false)
      (blob = find_blob(id)) && blob.is_marked?(id, ignore_errors)
    end
def is_marked?(id, ignore_errors = false)
      (blob = find_blob(id)) && blob.is_marked?(id, ignore_errors)
    end
Check if the object is marked.
 @param id [Integer] ID of the object to check
 @param ignore_errors [Boolean] If set to true no errors will be raised
        for non-existing objects.