Prefix cannot be removed once set

[Mangara]

The documentation for the prefix option states

The prefix can be overridden by any metric call by setting the no_prefix keyword argument to true. We recommend against doing this, but this behavior is retained for backwards compatibility. Rather, when you feel the need to do this, we recommend instantiating a new client without prefix (using clone_with_options), and using it to emit the metric.

However, this does not work due to the way clone_with_options works:

def clone_with_options(prefix: nil, ...)
  self.class.new(prefix: prefix || @prefix, ...)
end

So calling clone_with_options(prefix: nil) will maintain the same prefix as before.