public ExternalMetricSourceArgs build() {
            if ($.metricName == null) {
                throw new MissingRequiredPropertyException("ExternalMetricSourceArgs", "metricName");
            }
            return $;
        }
@param targetValue targetValue is the target value of the metric (as a quantity). Mutually exclusive with TargetAverageValue.

@return builder
sdk/java/src/main/java/com/pulumi/kubernetes/autoscaling/v2beta1/inputs/ExternalMetricSourceArgs.java