code: public static SQLiteDatabase create(CursorFactory factory) {
          // This is a magic string with special meaning for SQLite.
          return openDatabase(com.couchbase.lite.internal.database.sqlite.SQLiteDatabaseConfiguration.MEMORY_DB_PATH,
                  factory, CREATE_IF_NECESSARY);
      }
docs: Create a memory backed SQLite database.  Its contents will be destroyed
  when the database is closed.
  
  @param factory an optional factory class that is called to instantiate a
  cursor when query is called
  @return a SQLiteDatabase object, or null if the database can't be created