getRun
Gets the current run.
When iterating by run, at the end of each line, there's a position with a null run, so this function can return null. The null run at the end of each line ensures that all lines have at least one run, even lines consisting of only a newline.
Use the faster method@Pango.LayoutIter.get_run_readonly if you do not plan to modify the contents of the run (glyphs, glyph widths, etc.).
Return
the current run