How to create relationships between deploymentNodes

Question

Trying to create a relationship between deployment Nodes result in error:

workspace.dsl: The source element "loadBalancer" does not exist at line 142: loadBalancer -> firewall at line 3: !include model.dsl

dev = deploymentEnvironment dev  {            
            deploymentNode abc {
                infrastructureNode loadBalancer
                infrastructureNode firewall
           }
           loadBalancer -> firewall
        }

What did I wrong?

structurizr / dsl

How to create relationships between deploymentNodes #296

Question