docs: def generate_api_for_source(self, source_fpath: str):
          """Generate end json api file with directory structure for concrete
          source file."""
          content = self.convert_content(source_fpath)
          if content is None:
              return
  
          dest_fpath = self.dest_fpath(source_fpath)
          self.create_fpath_dir(dest_fpath)
  
          with open(dest_fpath, 'w+') as dest_f:
              json.dump(content, dest_f, cls=DateTimeJsonEncoder)