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matchInfo gives information about the result, such as description, keywords, and the body text.
Parameters:
profile - Required. Specifies which profile you're
working with.id - Required. the id of a single URL, returned from a
previous function.query - Providing the query will allow the Search Appliance to
highlight the query in the match info response.
The output of the function is described in the XML Elements in the Search Results section (4.14.3, here).