rename merge_variables -> init_properties

    def result_dir(self):

        return osp.join(self.directory, 'result')

    def merge_variables(self, src_download_link: str = '', **kwargs):

    def init_properties(self, src_download_link: str = '', **kwargs):

        self.src_download_link = src_download_link

    def load_from_dict(self, proj_dict: dict):

                self._idx2pagename[ii] = imname

            for imname in not_found_pages:

                self.not_found_pages[imname] = [TextBlock(**blk_dict) for blk_dict in page_dict[imname]]

            self.merge_variables(**proj_dict)

            self.init_properties(**proj_dict)

        except Exception as e:

            raise ProjectNotSupportedException(e)

        set_img_failed = False

            self.pages[imgname] = []

            self._pagename2idx[imgname] = ii

            self._idx2pagename[ii] = imgname

        self.merge_variables()

        self.init_properties()

        self.set_current_img_byidx(0)

        self.save()