| Total Complexity | 4 | 
| Total Lines | 33 | 
| Duplicated Lines | 0 % | 
| Coverage | 100% | 
| Changes | 1 | ||
| Bugs | 0 | Features | 0 | 
| 1 | <?php  | 
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| 5 | final class ElasticApmTracerSingleton  | 
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| 6 | { | 
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| 7 | /**  | 
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| 8 | * @var ElasticApmTracer  | 
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| 9 | */  | 
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| 10 | private static $instance = null;  | 
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| 11 | |||
| 12 | /**  | 
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| 13 | * @param ElasticApmTracer $instance  | 
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| 14 | *  | 
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| 15 | * @throws \Exception  | 
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| 16 | */  | 
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| 17 | 2 | public static function inject(ElasticApmTracer $instance)  | 
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| 18 |     { | 
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| 19 | 2 |         if (null !== self::$instance) { | 
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| 20 | 1 |             throw new \Exception('Already an injected object, it cannot be replaced.'); | 
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| 21 | }  | 
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| 22 | |||
| 23 | 2 | self::$instance = $instance;  | 
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| 24 | 2 | }  | 
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| 25 | |||
| 26 | /**  | 
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| 27 | * @return ElasticApmTracer  | 
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| 28 | *  | 
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| 29 | * @throws \Exception  | 
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| 30 | */  | 
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| 31 | 2 | public static function instance()  | 
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| 38 | }  | 
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| 39 | }  | 
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| 40 |