Change Details

- Use `NewItem` instead of `JsonFileEntityLookup` (see also `InMemoryEntityLookup`) - If necessary, create and use `NewStatement` - Format according to Arrange-Act-Assert - Add helper methods to create constraint parameters once we no longer support the concise template format (instead of copy+pasting the snak construction + serialization everywhere)

- Use `NewItem` and `NewStatement` instead of `JsonFileEntityLookup` (see also `InMemoryEntityLookup`) - Format according to Arrange-Act-Assert - Add helper methods to create constraint parameters once we no longer support the concise template format (instead of copy+pasting the snak construction + serialization everywhere)

- Use `NewItem` and `NewStatement` instead of `JsonFileEntityLookup` (see also `InMemoryEntityLookup`) - If necessary, create and use `NewStatement` - Format according to Arrange-Act-Assert - Add helper methods to create constraint parameters once we no longer support the concise template format (instead of copy+pasting the snak construction + serialization everywhere)