<｜begin▁of▁sentence｜>### Instruction:
Given a tree structure stored in a graph file 'tree_graph.gml', can you generate a dendrogram visualization using the CairoDendrogramDrawer class from the igraph library?
### Response:
from igraph import Graph, Dendrogram
import igraph.drawing as igd
from cairo import Context, ImageSurface, FORMAT_ARGB32
from igraph.drawing import BoundingBox

# Load the graph
g = Graph.Read('tree_graph.gml')

# Create a dendrogram of the graph
# (real data should have a meaningful tree structure)
dendrogram = g.community_edge_betweenness().as_clustering().to_dendrogram()

# Setup Cairo surface and context
surface = ImageSurface(FORMAT_ARGB32, 600, 400)
context = Context(surface)

# Create a bounding box
drawer = igd.CairoDendrogramDrawer(context, bbox=BoundingBox(600, 400))

# Draw the dendrogram with default style
# (in a real-world application, you should adjust the style parameters as needed)
drawer.draw(dendrogram)

# Save the result
g.save('dendrogram.png')
<|EOT|>
