Loads a file and creates a View from it. Files are split
        between a YAML front-matter and the content (unless it is a .yml file).

def load_file(self, app, pathname, relpath, pypath):
        """Loads a file and creates a View from it. Files are split
        between a YAML front-matter and the content (unless it is a .yml file).
        """
        try:
            view_class = self.get_file_view_cls(relpath)
            return create_view_from_file(pathname, source_template=relpath, view_class=view_class)
        except DeclarativeViewError:
            pass