## system_id property


The system identifier associated with the entity if specified, and null otherwise. This may be an absolute URI or not.
### Definition:
```python
@property
def system_id(self):
    ...
@system_id.setter
def system_id(self, value):
    ...
```

### See Also
* module [`aspose.svg.dom`](../../)
* class [`Entity`](/svg/python-net/aspose.svg.dom/entity)