def get_firewall_rule(resource_group_name, account_name, firewall_rule_name, custom_headers:nil)
      response = get_firewall_rule_async(resource_group_name, account_name, firewall_rule_name, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def get_firewall_rule(resource_group_name, account_name, firewall_rule_name, custom_headers:nil)
      response = get_firewall_rule_async(resource_group_name, account_name, firewall_rule_name, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Gets the specified Data Lake Store firewall rule.

 @param resource_group_name [String] The name of the Azure resource group that
 contains the Data Lake Store account.
 @param account_name [String] The name of the Data Lake Store account from
 which to get the firewall rule.
 @param firewall_rule_name [String] The name of the firewall rule to retrieve.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [FirewallRule] operation results.