These changes were implemented in 0.79
diff --git a/qt5/src/poppler-form.h b/qt5/src/poppler-form.h
index 4e356b8..d252ff8 100644
--- a/qt5/src/poppler-form.h
+++ b/qt5/src/poppler-form.h
@@ -55,7 +55,7 @@
/**
The class containing the appearance information
- \since 0.78
+ \since 0.79
*/
class POPPLER_QT5_EXPORT FormFieldIcon {
@@ -249,7 +249,7 @@
/**
* Gets the icon used by the button
*
- * \since 0.78
+ * \since 0.79
*/
FormFieldIcon icon() const;
@@ -257,7 +257,7 @@
* Sets a new icon for the button, it has to be a icon
* returned by FormFieldButton::icon.
*
- * \since 0.78
+ * \since 0.79
*/
void setIcon(const FormFieldIcon &icon);