jaeger-client -> opentelemetry

vendor/open-telemetry/sdk/Metrics/MetricMetadataInterface.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Metrics;
+
+use OpenTelemetry\SDK\Metrics\Data\Temporality;
+
+interface MetricMetadataInterface
+{
+    /**
+     * @return string|InstrumentType
+     */
+    public function instrumentType();
+
+    public function name(): string;
+
+    public function unit(): ?string;
+
+    public function description(): ?string;
+
+    /**
+     * Returns the underlying temporality of this metric.
+     *
+     * @return string|Temporality internal temporality
+     */
+    public function temporality();
+}