==== VARIATION: matchExpression=InternalSchemaMatchArrayIndexMatchExpression
{ a: { $_internalSchemaMatchArrayIndex: { index: 2, namePlaceholder: "i", expression: { i: { $lt: 3 } } } } }

==== VARIATION: taggedMatchExpression=InternalSchemaMatchArrayIndexMatchExpression
{ a: { $_internalSchemaMatchArrayIndex: { index: 2, namePlaceholder: "i", expression: { i: { $lt: 3 } } } } } || Selected Index #2 pos 0 combine 1

