Bug 202254 Exception is thrown when category values are null and type of X axis is set to DateTime
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/data/DataPackage.java
* @see #getAction()
	 * @generated
	 */
	EReference getAction_Value( );
	/**
	 * Returns the meta object for class '{@link org.eclipse.birt.chart.model.data.BaseSampleData <em>Base Sample Data</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for class '<em>Base Sample Data</em>'.
	 * @see org.eclipse.birt.chart.model.data.BaseSampleData
	 * @generated
	 */
	EClass getBaseSampleData( );
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.data.BaseSampleData#getDataSetRepresentation <em>Data Set Representation</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Data Set Representation</em>'.
	 * @see org.eclipse.birt.chart.model.data.BaseSampleData#getDataSetRepresentation()
	 * @see #getBaseSampleData()
	 * @generated
	 */
	EAttribute getBaseSampleData_DataSetRepresentation( );
	/**
	 * Returns the meta object for class '{@link org.eclipse.birt.chart.model.data.BubbleDataSet <em>Bubble Data Set</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for class '<em>Bubble Data Set</em>'.
	 * @see org.eclipse.birt.chart.model.data.BubbleDataSet
	 * @generated
	 */
	EClass getBubbleDataSet( );