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<?php $a = ['teste' => 'teste']; $key = null; var_dump($this->paymentMetadata[$key] ?? $key === null ? $this->paymentMetadata : null);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Using $this when not in object context in /in/ta7of:5 Stack trace: #0 {main} thrown in /in/ta7of on line 5
Process exited with code 255.

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