Collapse this block with the above into:

```python
self.BEGIN.PACKED_LINKER_OPTIONS = True
self.END.PACKED_LINKER_OPTIONS = True
if separator_begin_end is not None:
    self.BEGIN.SEPARATOR = separator_begin_end
    self.END.SEPARATOR = separator_begin_end
if prefix_begin_end is not None:
    self.BEGIN.PREFIX = prefix_begin_end
    self.END.PREFIX = prefix_begin_end