Bug 152430 Key can modify to empty string
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/SelectionChoiceHandle.java
}
	/**
	 * Returns the label.
	 * 
	 * @return the label
	 */
	public String getLabel( )
	{
		return getStringProperty( SelectionChoice.LABEL_MEMBER );
	}
	/**
	 * Sets the label.
	 * 
	 * @param label
	 *            the label to set
	 */
	public void setLabel( String label )
	{
		setPropertySilently( SelectionChoice.LABEL_MEMBER, label );
	}
	/**
	 * Returns the resource key if label needs localization.
	 * 
	 * @return the resource key of label.
	 */
	public String getLabelKey( )
	{
		return getStringProperty( SelectionChoice.LABEL_RESOURCE_KEY_MEMBER );
	}
	/**