[pango/line-breaker] layout-run: add docs

[Matthias Clasen <matthiasc src gnome org>]

commit 2e3a63dccf9aacd831f26ce2ae92e6a68dbd566f
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Jan 24 14:41:52 2022 -0500

    layout-run: add docs

 pango/pango-layout-run.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
---
diff --git a/pango/pango-layout-run.c b/pango/pango-layout-run.c
index f17ca084..b9835445 100644
--- a/pango/pango-layout-run.c
+++ b/pango/pango-layout-run.c
@@ -6,12 +6,34 @@
 
 #include <math.h>
 
+/**
+ * PangoLayoutRun:
+ *
+ * A `PangoLayoutRun` represents a single run within a `PangoLayoutLine`.
+ */
+
+/**
+ * pango_layout_run_get_item:
+ * @run: a `PangoLayoutRun`
+ *
+ * Gets the `PangoItem` for the run.
+ *
+ * Returns: (transfer none): the `PangoItem` of @run
+ */
 PangoItem *
 pango_layout_run_get_item (PangoLayoutRun *run)
 {
   return run->glyph_item.item;
 }
 
+/**
+ * pango_layout_run_get_glyphs:
+ * @run: a `PangoLayoutRun`
+ *
+ * Gets the `PangoGlyphString` for the run.
+ *
+ * Returns: (transfer none): the `PangoGlyphString` of @run
+ */
 PangoGlyphString *
 pango_layout_run_get_glyphs (PangoLayoutRun *run)
 {