AsynchronousInstrument

class \OpenTelemetry\API\Metrics\Noop\NoopObservableCounter implements \OpenTelemetry\API\Metrics\ObservableCounterInterface
class \OpenTelemetry\API\Metrics\Noop\NoopObservableGauge implements \OpenTelemetry\API\Metrics\ObservableGaugeInterface
class \OpenTelemetry\API\Metrics\Noop\NoopObservableUpDownCounter implements \OpenTelemetry\API\Metrics\ObservableUpDownCounterInterface
class \OpenTelemetry\SDK\Metrics\ObservableCounter implements \OpenTelemetry\API\Metrics\ObservableCounterInterface, \OpenTelemetry\SDK\Metrics\InstrumentHandle uses \OpenTelemetry\SDK\Metrics\ObservableInstrumentTrait
class \OpenTelemetry\SDK\Metrics\ObservableGauge implements \OpenTelemetry\API\Metrics\ObservableGaugeInterface, \OpenTelemetry\SDK\Metrics\InstrumentHandle uses \OpenTelemetry\SDK\Metrics\ObservableInstrumentTrait
class \OpenTelemetry\SDK\Metrics\ObservableUpDownCounter implements \OpenTelemetry\API\Metrics\ObservableUpDownCounterInterface, \OpenTelemetry\SDK\Metrics\InstrumentHandle uses \OpenTelemetry\SDK\Metrics\ObservableInstrumentTrait