getCompletions retrieves potential completions for a partially typed
query. It can be used by a custom client to implement autocomplete as the user
profile- Required. Specifies which profile you're working with.
term- Required. The partially typed term to get completions for.
Zero or more
Completion elements are returned. Their text content is a
potential completion, and each completion has attributes:
profile- the profile this completion came from.
score- the score for this completion. Completions are ranked according to score, which can be derived from occurrences in the content, queries, and search user clicks.