I have an open facing form that a visitor can fill out to request information. I add that visitor to the sites contacts. Is there a way to query the sites contacts to see if that visitor has already made a request so I do not create an other contact. I know about getContactById( ) but that is not what I need. I need to query based on the email field similar to a wix-data wixdata.query(). Can this be done. If so what method(function) do I use?