Allows zero or one value, resulting in an optional scalar type (undefined | V).
Warning
For dictionary shapes, each tag in the map holds a single string.
minCount/maxCount apply per tag, not as an aggregate across all tags. This differs from
vanilla SHACL aggregate counting, though expressible via per-tag property shapes.
Creates a SetShape for at most one value (0..1).
Allows zero or one value, resulting in an optional scalar type (
undefined | V).For dictionary shapes, each tag in the map holds a single string.
minCount/maxCountapply per tag, not as an aggregate across all tags. This differs from vanilla SHACL aggregate counting, though expressible via per-tag property shapes.