Method putMetric

packages/firebase-performance/index.android.ts:100–102

(metricName: string, value: number)

		this.native.putAttribute(attribute, value);
	}
	putMetric(metricName: string, value: number): void {
		this.native.putMetric(metricName, value);
	}
	removeMetric(metricName: string): void {
		this.native.removeAttribute(metricName);
	}