public FirewallPolicyStatelessCustomActionsDetails withActionDefinition(StatelessCustomActionDefinition actionDefinition) {
        setActionDefinition(actionDefinition);
        return this;
    }
<p>
The definition of the custom action.
</p>

@param actionDefinition
       The definition of the custom action.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-securityhub/src/main/java/com/amazonaws/services/securityhub/model/FirewallPolicyStatelessCustomActionsDetails.java