pub fn firewall_configs(mut self, input: crate::model::FirewallConfig) -> Self {
            let mut v = self.firewall_configs.unwrap_or_default();
            v.push(input);
            self.firewall_configs = Some(v);
            self
        }
/// Appends an item to `firewall_configs`.
///
/// To override the contents of this collection use [`set_firewall_configs`](Self::set_firewall_configs).
///
/// <p>The configurations for the firewall behavior provided by DNS Firewall for VPCs from Amazon Virtual Private Cloud (Amazon VPC). </p>
Appends an item to `firewall_configs`.
To override the contents of this collection use [`set_firewall_configs`](Self::set_firewall_configs).

The configurations for the firewall behavior provided by DNS Firewall for VPCs from Amazon Virtual Private Cloud (Amazon VPC).
Appends an item to ` firewall_configs ` . To override the contents of this collection use [ ` set_firewall_configs ` ] ( Self :: set_firewall_configs ) . The configurations for the firewall behavior provided by DNS Firewall for VPCs from Amazon Virtual Private Cloud ( Amazon VPC ) .
pub fn firewall_configs(mut self, input: crate::model::FirewallConfig) -> Self {
            let mut v = self.firewall_configs.unwrap_or_default();
            v.push(input);
            self.firewall_configs = Some(v);
            self
        }
pub fn firewall_configs ( mut self , input : crate :: model :: FirewallConfig ) -> Self { let mut v = self . firewall_configs . unwrap_or_default ( ) ; v . push ( input ) ; self . firewall_configs = Some ( v ) ; self }
Appends an item to `firewall_configs`.
Appends an item to ` firewall_configs ` .
mut self
input
crate::model::FirewallConfig
mut self
input
crate::model::FirewallConfig