Gets a list of completion objects for the symbol under the cursor.

def complete(self):
        """Gets a list of completion objects for the symbol under the cursor."""
        if self._possible is None:
            self._possible = []
            for possible in self.names:
                c = Completion(self.context, self.names[possible], len(self.context.symbol))
                self._possible.append(c)

        return self._possible