<｜begin▁of▁sentence｜>### Instruction:
As a Robotics Technician working in a manufacturing facility, you may encounter a scenario where you need to create a visual representation of the hierarchical structure of robotic systems and equipment. Using the igraph library, you may need to draw a dendrogram onto a 2D surface with custom dimensions. To achieve this, you want to know how to set the bounding box of the drawing area for a CairoDendrogramDrawer instance in igraph.
### Response:
from igraph.drawing import CairoDendrogramDrawer

# Instantiate a CairoDendrogramDrawer
drawer = CairoDendrogramDrawer(surface=None)

# Set the bounding box for the drawer
drawer.bbox = (0, 0, 400, 300)

# Use the drawer to create a dendrogram representation
# ... additional code to use the drawer ...
<|EOT|>
