public EnvFromSource build() {
            final var _resultValue = new EnvFromSource();
            _resultValue.configMapRef = configMapRef;
            _resultValue.prefix = prefix;
            _resultValue.secretRef = secretRef;
            return _resultValue;
        }
@return The Secret to select from
sdk/java/src/main/java/com/pulumi/kubernetes/core/v1/outputs/EnvFromSource.java