public Builder configMapKeyRef(@Nullable Output<ConfigMapKeySelectorArgs> configMapKeyRef) {
            $.configMapKeyRef = configMapKeyRef;
            return this;
        }
@param configMapKeyRef Selects a key of a ConfigMap.

@return builder
sdk/java/src/main/java/com/pulumi/kubernetes/core/v1/inputs/EnvVarSourceArgs.java