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These use cases give rise to a design with some "indirection" to support the multiplicity of values corresponding to multiple type systems in the same JVM (with possibly the same JCas cover objects).

Runtime checks

Runtime checks can slow down normal operations, but this can be minimized via a design which only references L1/cache data.

Frequencies

• 1 = high freq get of Feature from FS (e.g. begin, end)
• 2 = medium freq get of Feature from FS (key feature)
• 3 = medium freq get of Feature from FS (not key feature)
• 4 = set of Feature from FS