Add R2Ppptx slide

Add an `R2PptxSlide` object to something else compatible.

# S4 method for class 'R2Pptx,R2PptxSlide'
e1 + e2

Arguments

e1

An object that a slide can be added to, such as an `R2PptxPresentation`, `R2PptxSlide`, or `R2PptxSlideList`.

e2

`R2PptxSlide` object

Value

If e1 is an object of class R2PptxPresentation then returns an object of class R2PptxPresentation. Otherwise returns an object of class R2PptxSlideList