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 getBlock_Triggers( );
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.layout.Block#getWidthHint <em>Width Hint</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Width Hint</em>'.
	 * @see org.eclipse.birt.chart.model.layout.Block#getWidthHint()
	 * @see #getBlock()
	 * @generated
	 */
	EAttribute getBlock_WidthHint( );
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.layout.Block#getHeightHint <em>Height Hint</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Height Hint</em>'.
	 * @see org.eclipse.birt.chart.model.layout.Block#getHeightHint()
	 * @see #getBlock()
	 * @generated
	 */
	EAttribute getBlock_HeightHint( );
	/**
	 * Returns the meta object for class '{@link org.eclipse.birt.chart.model.layout.ClientArea <em>Client Area</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for class '<em>Client Area</em>'.
	 * @see org.eclipse.birt.chart.model.layout.ClientArea
	 * @generated
	 */