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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def save_current(self, path=None):
 """ Save current editor content. Leave file to None to erase the previous file content. If the current editor's file_path is None and path is None, the function will call ``QtWidgets.QFileDialog.getSaveFileName`` to get a valid save filename. :param path: path of the file to save, leave it None to overwrite existing file. """

        try:
            if not path and not self._current.file.path:
                path, filter = QtWidgets.QFileDialog.getSaveFileName(
                    self, _('Choose destination path'))
                if not path:
                    return False
            old_path = self._current.file.path
            code_edit = self._current
            self._save_editor(code_edit, path)
            path = code_edit.file.path
            # path (and icon) may have changed
            if path and old_path != path:
                self._ensure_unique_name(code_edit, code_edit.file.name)
                self.setTabText(self.currentIndex(), code_edit._tab_name)
                ext = os.path.splitext(path)[1]
                old_ext = os.path.splitext(old_path)[1]
                if ext != old_ext or not old_path:
                    icon = QtWidgets.QFileIconProvider().icon(
                        QtCore.QFileInfo(code_edit.file.path))
                    self.setTabIcon(self.currentIndex(), icon)
            return True
        except AttributeError:  # not an editor widget
            pass
        return False