Bug 312761 It makes no difference changing the series labels position in Radar chart.[13]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/type/impl/PieSeriesImpl.java
return;
			case TypePackage.PIE_SERIES__SLICE_OUTLINE :
				setSliceOutline( (ColorDefinition) newValue );
				return;
			case TypePackage.PIE_SERIES__RATIO :
				setRatio( (Double) newValue );
				return;
			case TypePackage.PIE_SERIES__ROTATION :
				setRotation( (Double) newValue );
				return;
			case TypePackage.PIE_SERIES__CLOCKWISE :
				setClockwise( (Boolean) newValue );
				return;
		}
		super.eSet( featureID, newValue );
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset( int featureID )
	{
		switch ( featureID )
		{
			case TypePackage.PIE_SERIES__EXPLOSION :
				unsetExplosion( );
				return;
			case TypePackage.PIE_SERIES__EXPLOSION_EXPRESSION :