How to use the @azure/arm-network.NetworkManagementClient function in @azure/arm-network

public async get_dns_settings(nicName: string, rg: string | null = null) { 
        
        let util = IngredientManager.getIngredientFunction("coreutils", this.context);
        let resource_group = rg || await util.resource_group();

        const client = new NetworkManagementClient(this.context.AuthToken, this.context.Environment.authentication.subscriptionId);                
        let response = await client.networkInterfaces.get( resource_group, nicName)                      
        return response.dnsSettings;
    }

public async get(nicName: string, rg: string | null = null) { 
        
        let util = IngredientManager.getIngredientFunction("coreutils", this.context);
        let resource_group = rg || await util.resource_group();

        const client = new NetworkManagementClient(this.context.AuthToken, this.context.Environment.authentication.subscriptionId);                
        let response = await client.networkInterfaces.get( resource_group, nicName)                              
        return response;
    }
    public async get_mac_address(nicName: string, rg: string | null = null) {

public async get_primary(nicName: string, rg: string | null = null) { 
        
        let util = IngredientManager.getIngredientFunction("coreutils", this.context);
        let resource_group = rg || await util.resource_group();

        const client = new NetworkManagementClient(this.context.AuthToken, this.context.Environment.authentication.subscriptionId);                
        let response = await client.networkInterfaces.get( resource_group, nicName)                      
        return response.primary;
    }

public async get_mac_address(nicName: string, rg: string | null = null) { 
        
        let util = IngredientManager.getIngredientFunction("coreutils", this.context);
        let resource_group = rg || await util.resource_group();

        const client = new NetworkManagementClient(this.context.AuthToken, this.context.Environment.authentication.subscriptionId);                
        let response = await client.networkInterfaces.get( resource_group, nicName)                      
        return response.macAddress;
    }   
    public async get_ip_configurations(nicName: string, rg: string | null = null) {

public async get_virtual_machine(nicName: string, rg: string | null = null) { 
        
        let util = IngredientManager.getIngredientFunction("coreutils", this.context);
        let resource_group = rg || await util.resource_group();

        const client = new NetworkManagementClient(this.context.AuthToken, this.context.Environment.authentication.subscriptionId);                
        let response = await client.networkInterfaces.get( resource_group, nicName)                      
        return response.virtualMachine;
    }

public async get_ip_configurations(nicName: string, rg: string | null = null) { 
        
        let util = IngredientManager.getIngredientFunction("coreutils", this.context);
        let resource_group = rg || await util.resource_group();

        const client = new NetworkManagementClient(this.context.AuthToken, this.context.Environment.authentication.subscriptionId);                
        let response = await client.networkInterfaces.get( resource_group, nicName)                      
        return response.ipConfigurations;
    }

public async get_enable_ip_forwarding(nicName: string, rg: string | null = null) { 
        
        let util = IngredientManager.getIngredientFunction("coreutils", this.context);
        let resource_group = rg || await util.resource_group();

        const client = new NetworkManagementClient(this.context.AuthToken, this.context.Environment.authentication.subscriptionId);                
        let response = await client.networkInterfaces.get( resource_group, nicName)                      
        return response.enableIPForwarding;
    } 
}