CommandTransportException: Allow to attach the failed command

library/Icingadb/Command/Transport/CommandTransportException.php

@@ -11,4 +11,33 @@ use Icinga\Exception\IcingaException;
  */
 class CommandTransportException extends IcingaException
 {
+    /** @var mixed The command that was not sent */
+    private mixed $command = null;
+
+    /**
+     * Set the command that was not sent
+     *
+     * This will be passed to the next transport in the chain.
+     * Make sure the transport accepts this type in {@see CommandTransportInterface::send()}.
+     *
+     * @param mixed $command
+     *
+     * @return $this
+     */
+    public function setCommand(mixed $command): static
+    {
+        $this->command = $command;
+
+        return $this;
+    }
+
+    /**
+     * Get the command that was not sent
+     *
+     * @return mixed
+     */
+    public function getCommand(): mixed
+    {
+        return $this->command;
+    }
 }