How to Get Paragraph Text Range of Text Animation?

Please unzip this package and open the pptx file.
lesson (1.0 MB)
When I get the effects collection in the animation timeline.I found there is no way to get the start and end range of the pRg.
2021-09-03 4.30.05.png (54.8 KB) I try to use the code like below to get the paragraph number.But it always return 0.
presentation = new Presentation(“lesson02.pptx”);
int buildType = presentation.getSlides().get_Item(0).getTimeline().getMainSequence().get_Item(1).getTextAnimation().getBuildType();
How can I present the paragraph text range of animation in right way? any help would be grateful.

Thank you for posting the query. I found no way to get the paragraph text range of the animation and logged the issue with ID SLIDESJAVA-38623 in our tracking system. Our development team will consider this capability. We will inform you of any progress.