def check!
      raise TaxCloud::Errors::MissingConfigOption.new('api_login_id') unless api_login_id && !api_login_id.strip.empty?
      raise TaxCloud::Errors::MissingConfigOption.new('api_key') unless api_key && !api_key.strip.empty?
    end
def check!
      raise TaxCloud::Errors::MissingConfigOption.new('api_login_id') unless api_login_id && !api_login_id.strip.empty?
      raise TaxCloud::Errors::MissingConfigOption.new('api_key') unless api_key && !api_key.strip.empty?
    end
Check the configuration.

 Will raise a TaxCloud::Errors::MissingConfigOption if any of the API login ID or the API key are missing.