Bug 207268 Add visibility option for plot within axes
For chart with axes, we should make plot within axes invisible. Meantime, other plots, such as axes, legend and title, should be visible. This enhancement doesn't include UI change, and it is required for cross tab integration.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/layout/LayoutPackage.java
* @generated
	 */
	EReference getLegend_Title( );
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.layout.Legend#getTitlePosition <em>Title Position</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Title Position</em>'.
	 * @see org.eclipse.birt.chart.model.layout.Legend#getTitlePosition()
	 * @see #getLegend()
	 * @generated
	 */
	EAttribute getLegend_TitlePosition( );
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.layout.Legend#isShowValue <em>Show Value</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Show Value</em>'.
	 * @see org.eclipse.birt.chart.model.layout.Legend#isShowValue()
	 * @see #getLegend()
	 * @generated
	 */
	EAttribute getLegend_ShowValue( );
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.layout.Legend#isShowPercent <em>Show Percent</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Show Percent</em>'.
	 * @see org.eclipse.birt.chart.model.layout.Legend#isShowPercent()
	 * @see #getLegend()