Bug 161174 Expect to set/get interval range with a 'String' param in GroupHandle.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/GroupHandle.java
{
		return ( getFooter( ).getCount( ) != 0 );
	}
	/**
	 * Sets a table of contents entry for this item. The TOC property defines an
	 * expression that returns a string that is to appear in the Table of
	 * Contents for this item or its container.
	 * 
	 * @param expression
	 *            the expression that returns a string
	 * @throws SemanticException
	 *             if the TOC property is locked by the property mask.
	 * 
	 * @see #getTocExpression()
	 */
	public void setTocExpression( String expression ) throws SemanticException
	{
		setStringProperty( GroupElement.TOC_PROP, expression );
	}
	/**
	 * Returns the expression evalueated as a table of contents entry for this
	 * item.
	 * 
	 * @return the expression evaluated as a table of contents entry for this
	 *         item
	 * @see #setTocExpression(String)
	 */
	public String getTocExpression( )
	{
		return getStringProperty( GroupElement.TOC_PROP );