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
* <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */
	public LeaderLineStyle getLeaderLineStyle( )
	{
		return leaderLineStyle;
	}
	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */
	public void setLeaderLineStyle( LeaderLineStyle newLeaderLineStyle )
	{
		LeaderLineStyle oldLeaderLineStyle = leaderLineStyle;
		leaderLineStyle = newLeaderLineStyle == null ? LEADER_LINE_STYLE_EDEFAULT
				: newLeaderLineStyle;
		boolean oldLeaderLineStyleESet = leaderLineStyleESet;
		leaderLineStyleESet = true;
		if ( eNotificationRequired( ) )
			eNotify( new ENotificationImpl( this,
					Notification.SET,
					TypePackage.PIE_SERIES__LEADER_LINE_STYLE,
					oldLeaderLineStyle,
					leaderLineStyle,
					!oldLeaderLineStyleESet ) );
	}
	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */