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
public LineAttributes getLeaderLineAttributes( )
	{
		return leaderLineAttributes;
	}
	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetLeaderLineAttributes(
			LineAttributes newLeaderLineAttributes, NotificationChain msgs )
	{
		LineAttributes oldLeaderLineAttributes = leaderLineAttributes;
		leaderLineAttributes = newLeaderLineAttributes;
		if ( eNotificationRequired( ) )
		{
			ENotificationImpl notification = new ENotificationImpl( this,
					Notification.SET,
					TypePackage.PIE_SERIES__LEADER_LINE_ATTRIBUTES,
					oldLeaderLineAttributes,
					newLeaderLineAttributes );
			if ( msgs == null )
				msgs = notification;
			else
				msgs.add( notification );
		}
		return msgs;
	}
	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated