SamplerInterface.php
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SamplerInterface.php
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	<?php
	namespace Wikimedia\Telemetry;

	/**
	* Interface for OTEL span samplers.
	* @since 1.43
	*/
	interface SamplerInterface {
	/**
	* Determine whether a newly created span should be sampled based on its parent span data.
	*
	* @param SpanContext\|null $parentSpanContext Context of he parent span of the newly created span,
	* or `null` if the newly created span is a root span.
	* @return bool Whether the newly created span should be sampled.
	*/
	public function shouldSample( ?SpanContext $parentSpanContext ): bool;
	}

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