Update doc and sip binding

Author: pblottiere

python/core/auto_generated/layertree/qgslayertreelayer.sip.in

@@ -79,8 +79,19 @@ Sets the layer's name.
 %End
 
     void setUseLayerName( bool use = true );
+%Docstring
+Uses the layer's name if ``use`` is true, or the name manually set if
+false.
+
+.. versionadded:: 3.8
+%End
 
     bool useLayerName() const;
+%Docstring
+Returns whether the layer's name is used, or the name manually set.
+
+.. versionadded:: 3.8
+%End
 
     static QgsLayerTreeLayer *readXml( QDomElement &element, const QgsReadWriteContext &context ) /Factory/;
 %Docstring

src/core/layertree/qgslayertreelayer.h

@@ -90,8 +90,17 @@ class CORE_EXPORT QgsLayerTreeLayer : public QgsLayerTreeNode
      */
     void setName( const QString &n ) override;
 
+    /**
+     * Uses the layer's name if \a use is true, or the name manually set if
+     * false.
+     * \since QGIS 3.8
+     */
     void setUseLayerName( bool use = true );
 
+    /**
+     * Returns whether the layer's name is used, or the name manually set.
+     * \since QGIS 3.8
+     */
     bool useLayerName() const;
 
     /**

src/server/services/wms/qgswmsrenderer.h

@@ -77,15 +77,30 @@ namespace QgsWms
       ~QgsRenderer();
 
       /**
-       * Returns the map legend as an image (or NULLPTR in case of error). The caller takes ownership
-      of the image object*/
+       * Returns the map legend as an image (or NULLPTR in case of error). The
+       * caller takes ownership of the image object.
+       * \param model The layer tree model to use for building the legend
+       * \returns the legend as an image
+       * \since QGIS 3.8
+       */
       QImage *getLegendGraphics( QgsLayerTreeModel &model );
 
+      /**
+       * Returns the map legend as an image (or NULLPTR in case of error). The
+       * caller takes ownership of the image object.
+       * \param nodeModel The node model to use for building the legend
+       * \returns the legend as an image
+       * \since QGIS 3.8
+       */
       QImage *getLegendGraphics( QgsLayerTreeModelLegendNode &nodeModel );
 
       typedef QSet<QString> SymbolSet;
       typedef QHash<QgsVectorLayer *, SymbolSet> HitTest;
 
+      /**
+       * Returns the hit test according to the current context.
+       * \since QGIS 3.8
+       */
       HitTest symbols();
 
       /**