Nothing
test_that("multiplication works", {
expect_identical(normalize_terms(new_term(c("b", "b[3]"))), as_term(c("b[1]", "b[3]")))
expect_identical(normalize_terms(new_term(c("b[1]", "a[3]"))), as_term(c("b", "a[3]")))
expect_identical(normalize_terms(new_term()), as_term(character(0)))
expect_identical(normalize_terms(new_term(c("b[3]", NA))), as_term(c("b[3]", NA)))
})
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