$this->eggId
The nested id of your Plugin, if your Plugin is placed in a Nest.
Can be used in methods called by plugins. From Zenario 7.0.0 onwards.
If this Plugin is part of a Plugin Nest, $this->eggId will store the Plugin's id in the nested_plugins table.
If this Plugin is not part of a Nest, $this->eggId will be 0.
If your Plugin is placed in a Nest, then your $this->instanceId and $this->slotName variables will be the same as every other Plugin in the nest, but your $this->containerId and $this->eggId variables will be different.