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207 lines
11 KiB
Gherkin
207 lines
11 KiB
Gherkin
Feature: UKO Graph Persistence — Full Coverage for Error Paths and Edge Cases
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As a test infrastructure maintainer
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I need comprehensive test coverage for all branches in uko_persistence.py
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So that the module meets the 97% coverage threshold and all error paths are validated
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# =================================================================
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# JSONFilePersistenceBackend.load() — corrupted JSON file handling
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# =================================================================
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Scenario: JSONFilePersistenceBackend.load() returns empty list when JSON file is corrupted
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Given uko a JSON file persistence backend in a temp directory
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And uko the JSON file contains corrupted JSON data
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When uko I load from the JSON file backend for project "local/test"
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Then uko the result should be an empty list
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And uko a warning should be logged for load failure
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Scenario: JSONFilePersistenceBackend.load() returns empty list when JSON file is missing required keys
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Given uko a JSON file persistence backend in a temp directory
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And uko the JSON file contains valid JSON but missing "triples" key
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When uko I load from the JSON file backend for project "local/test"
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Then uko the result should be an empty list
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And uko a warning should be logged for load failure
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Scenario: JSONFilePersistenceBackend.load() returns empty list when file is unreadable
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Given uko a JSON file persistence backend in a temp directory
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And uko the JSON file exists but is unreadable (permission denied)
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When uko I load from the JSON file backend for project "local/test"
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Then uko the result should be an empty list
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And uko a warning should be logged for load failure
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# =================================================================
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# UKOGraphPersistence.save() — query failure path
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# =================================================================
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Scenario: UKOGraphPersistence.save() returns 0 when graph_backend.query() raises an exception
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Given uko a graph backend that raises an exception on query
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And uko a UKOGraphPersistence service with the failing backend
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When uko I call save on the persistence service
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Then uko the save result should be 0
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And uko a warning should be logged for query failure
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# =================================================================
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# UKOGraphPersistence.restore() — incomplete triple handling
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# =================================================================
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Scenario: UKOGraphPersistence.restore() skips triples with missing subject key
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Given uko a persistence backend with triples missing the "subject" key
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And uko a UKOGraphPersistence service with the persistence backend
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When uko I call restore on the persistence service
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Then uko the restore result should be 0
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And uko no triples should be added to the graph backend
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Scenario: UKOGraphPersistence.restore() skips triples with missing predicate key
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Given uko a persistence backend with triples missing the "predicate" key
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And uko a UKOGraphPersistence service with the persistence backend
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When uko I call restore on the persistence service
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Then uko the restore result should be 0
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And uko no triples should be added to the graph backend
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Scenario: UKOGraphPersistence.restore() skips triples with missing object key
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Given uko a persistence backend with triples missing the "object" key
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And uko a UKOGraphPersistence service with the persistence backend
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When uko I call restore on the persistence service
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Then uko the restore result should be 0
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And uko no triples should be added to the graph backend
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Scenario: UKOGraphPersistence.restore() skips triples with empty subject value
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Given uko a persistence backend with triples having empty subject value
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And uko a UKOGraphPersistence service with the persistence backend
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When uko I call restore on the persistence service
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Then uko the restore result should be 0
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And uko no triples should be added to the graph backend
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Scenario: UKOGraphPersistence.restore() skips triples with empty predicate value
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Given uko a persistence backend with triples having empty predicate value
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And uko a UKOGraphPersistence service with the persistence backend
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When uko I call restore on the persistence service
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Then uko the restore result should be 0
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And uko no triples should be added to the graph backend
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Scenario: UKOGraphPersistence.restore() skips triples with empty object value
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Given uko a persistence backend with triples having empty object value
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And uko a UKOGraphPersistence service with the persistence backend
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When uko I call restore on the persistence service
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Then uko the restore result should be 0
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And uko no triples should be added to the graph backend
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# =================================================================
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# UKOGraphPersistence.restore() — add_triple failure path
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# =================================================================
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Scenario: UKOGraphPersistence.restore() continues and logs warning when add_triple() raises an exception
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Given uko a persistence backend with valid triples
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And uko a graph backend that raises an exception on add_triple
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And uko a UKOGraphPersistence service with the failing backend
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When uko I call restore on the persistence service
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Then uko the restore result should be 0
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And uko a warning should be logged for triple failure
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Scenario: UKOGraphPersistence.restore() restores valid triples even when some fail
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Given uko a persistence backend with mixed valid and invalid triples
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And uko a graph backend that raises an exception only for specific triples
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And uko a UKOGraphPersistence service with the mixed backend
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When uko I call restore on the persistence service
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Then uko the restore result should be greater than 0
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And uko warnings should be logged for failed triples
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# =================================================================
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# InMemoryPersistenceBackend.clear() method
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# =================================================================
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Scenario: InMemoryPersistenceBackend.clear() removes stored triples for a project
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Given uko an in-memory persistence backend
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And uko I save triples to the persistence backend for project "local/test"
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When uko I clear the persistence backend for project "local/test"
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Then uko loading from the persistence backend for project "local/test" should return empty list
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Scenario: InMemoryPersistenceBackend.clear() does not affect other projects
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Given uko an in-memory persistence backend
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And uko I save triples to the persistence backend for project "local/test1"
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And uko I save triples to the persistence backend for project "local/test2"
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When uko I clear the persistence backend for project "local/test1"
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Then uko loading from the persistence backend for project "local/test1" should return empty list
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And uko loading from the persistence backend for project "local/test2" should return the saved triples
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Scenario: InMemoryPersistenceBackend.clear() on non-existent project does not raise error
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Given uko an in-memory persistence backend
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When uko I clear the persistence backend for project "local/nonexistent"
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Then uko no error should be raised
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# =================================================================
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# UKOGraphPersistence.project property
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# =================================================================
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Scenario: UKOGraphPersistence.project property returns the correct project name
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Given uko a graph backend with no triples
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And uko a UKOGraphPersistence service with project "local/my-app"
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When uko I access the project property
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Then uko the project property should return "local/my-app"
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Scenario: UKOGraphPersistence.project property is read-only
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Given uko a graph backend with no triples
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And uko a UKOGraphPersistence service with project "local/my-app"
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Then uko attempting to set the project property should raise AttributeError
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# =================================================================
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# Integration: Full save/restore lifecycle with JSONFilePersistenceBackend
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# =================================================================
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Scenario: Full save/restore lifecycle with JSONFilePersistenceBackend
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Given uko a mock graph backend with two sample triples
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And uko a JSON file persistence backend in a temp directory
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And uko a UKOGraphPersistence service with the JSON file backend
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When uko I save the graph state via the persistence service
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And uko I restore the graph state into a fresh backend with the same JSON file backend
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Then uko the restored backend should have the same triples
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Scenario: JSONFilePersistenceBackend creates base directory if it does not exist
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Given uko a JSON file persistence backend in a non-existent temp directory
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When uko I save triples to the JSON file backend for project "local/test"
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Then uko the base directory should be created
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And uko the JSON file should exist
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# =================================================================
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# Edge cases and validation
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# =================================================================
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Scenario: UKOGraphPersistence rejects whitespace-only project name
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Given uko a graph backend with no triples
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Then uko creating UKOGraphPersistence with whitespace-only project should raise ValueError
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Scenario: JSONFilePersistenceBackend rejects whitespace-only project on save
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Given uko a JSON file persistence backend in a temp directory
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Then uko saving to JSON file backend with whitespace-only project should raise ValueError
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Scenario: JSONFilePersistenceBackend rejects whitespace-only project on load
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Given uko a JSON file persistence backend in a temp directory
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Then uko loading from JSON file backend with whitespace-only project should raise ValueError
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Scenario: InMemoryPersistenceBackend rejects whitespace-only project on save
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Given uko an in-memory persistence backend
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Then uko saving to persistence backend with whitespace-only project should raise ValueError
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Scenario: InMemoryPersistenceBackend rejects whitespace-only project on load
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Given uko an in-memory persistence backend
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Then uko loading from persistence backend with whitespace-only project should raise ValueError
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Scenario: UKOGraphPersistence.save() handles empty bindings from query
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Given uko a graph backend that returns empty bindings on query
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And uko a UKOGraphPersistence service with the backend
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When uko I call save on the persistence service
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Then uko the save result should be 0
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Scenario: UKOGraphPersistence.save() filters out incomplete bindings
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Given uko a graph backend that returns bindings with missing keys
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And uko a UKOGraphPersistence service with the backend
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When uko I call save on the persistence service
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Then uko the save result should be 0
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And uko only complete triples should be persisted
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Scenario: UKOGraphPersistence.restore() handles empty persistence backend
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Given uko a persistence backend with no data
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And uko a UKOGraphPersistence service with the persistence backend
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When uko I call restore on the persistence service
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Then uko the restore result should be 0
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And uko an info log should be recorded for no data
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