<｜begin▁of▁sentence｜>### Instruction:
Given a list of fruit names ['apple', 'banana', 'cherry'], how can you use UniqueIdGenerator to assign unique IDs to these names, check if 'apple' already has an ID, retrieve its ID, override the ID for 'apple' as 10, and access the reverse mapping?
### Response:
from igraph import UniqueIdGenerator

# Create a UniqueIdGenerator
uid_gen = UniqueIdGenerator()

# Add items and generate unique IDs
uid_gen['apple']
uid_gen['banana']
uid_gen['cherry']

# Check if an item has an ID
'apple' in uid_gen

# Get the ID of an item
apple_id = uid_gen['apple']

# Get the current number of items
len(uid_gen)

# Override the ID for an item
uid_gen['apple'] = 10

# Access the reverse mapping
reverse_mapping = uid_gen.reverse_dict()

# Print information
print('Unique ID for apple:', apple_id)
print('Number of items:', len(uid_gen))
print('Reverse mapping:', reverse_mapping)
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