ACEsearch.connect       Connects to ACE instance
ACEsearch.contains      Returns whether patient with the specified
                        patient_id exists
ACEsearch.csv           Queries ACE with a CSV() command and imports
                        the contents of the csv into a data frame
ACEsearch.dump          Dumps patient from ACE to a file on disk
ACEsearch.query         Queries ACE and returns a list of patient IDs
ACEsearch.status        Returns the status of the ACE search engine
