*/ abstract class SolverOperation implements OperationInterface { /** @abstract must be redefined by extending classes */ protected const TYPE = ''; /** * Returns operation type. */ public function getOperationType(): string { return static::TYPE; } /** * @inheritDoc */ public function __toString() { return $this->show(false); } }__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NjQ2NDk0ODYwOTgyMjg2IDQ5MDI4NjIxMDU2NTEyODAgNDUyMTg1Mjc1MDcyNTc=