Returns whether this suggestions container has any suggested items, i.e. products.
Note that this method only looks for concrete suggested items. It does not account
for suggested terms. In other words, even if there are suggested terms, this method
will return false if no matching items, like products or categories, were found
for the suggested terms.
To find out whether there are suggested terms and how they match with respect to
the original search phrase, one can use getSuggestedTerms()
a list of SuggestedTerms