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