module Dry::Configurable

def setting(key, value = ::Dry::Configurable::Config::Value::NONE, &block)
  if block
    if block.parameters.empty?
      value = _config_for(&block)
    else
      processor = block
    end
  end
  _settings << ::Dry::Configurable::Config::Value.new(
    key,
    value,
    processor || ::Dry::Configurable::Config::DEFAULT_PROCESSOR
  )
end