Source

File: wp-includes/class-wp-recovery-mode-link-service.php

public function generate_url() {
		$token = $this->key_service->generate_recovery_mode_token();
		$key   = $this->key_service->generate_and_store_recovery_mode_key( $token );

		return $this->get_recovery_mode_begin_url( $token, $key );
	}