<｜begin▁of▁sentence｜>### Instruction:
Given the internet graph structure found in the GML file named as-22july06.gml, can you use the walktrap algorithm provided by the cdlib library to perform community detection? Additionally, can you provide the detected communities in a JSON format?
### Response:
import networkx as nx
from cdlib import algorithms

# Load the internet graph structure from the GML file
G = nx.read_gml('as-22july06.gml')

# Perform community detection using the walktrap algorithm
communities = algorithms.walktrap(G)

# Convert the communities to a JSON object
communities_json = communities.to_json()

print(communities_json)
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