eturn f&#34;Span({self.start},{self.end})&#34;

    @property
    def length(self) -&gt; int:
        &#34;&#34;&#34;
        Return length of span.
        &#34;&#34;&#34;
        return self.end - self.start

    @support_annotation_or_set
    def isoverlapping(self, start: int, end: int) -&gt; bool:
        &#34;&#34;&#34;
        Checks if this span is overlapping with the given span, annotation or
        annotation set.

        Note: this can be called with an Annotation or AnnotationSet instead of `