what is the meaning of suggestions in a Content Provider Uri?

I've got a Uri as below: content://com.android.contacts开发者_如何学JAVA/contacts/#/suggestions What data will it return? What's the meaning of 'suggestions' here?

Thanks in advance!

The Contacts API references the ContactsContract helper classes for dealing with contacts. "suggestions" is the string identifying the AggregationSuggestions sub-table (note the constant called CONTENT_DIRECTORY), which is used to provide information about how RawContacts that appear to describe the same person are aggregated into a single Contact.