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 getBooleanProperty( HIDE_DETAIL_PROP );
	}
	/**
	 * Sets whether to hide the detail rows of this group.
	 * 
	 * @param value
	 *            <code>true</code> if hide the detail rows, otherwise
	 *            <code>false</code>.
	 * @throws SemanticException
	 *             if the property is locked.
	 */
	public void setHideDetail( boolean value ) throws SemanticException
	{
		setProperty( HIDE_DETAIL_PROP, Boolean.valueOf( value ) );
	}
	/**
	 * Gets the on-pageBreak script of the group element. Presentation phase. It
	 * is for a script executed when the element is prepared for page breaking
	 * in the Presentation engine.
	 * 
	 * @return the on-pageBreak script of the group element
	 * 
	 */
	public String getOnPageBreak( )
	{
		return getStringProperty( ON_PAGE_BREAK_METHOD );
	}
	/**
	 * Sets the on-pageBreak script of the group element.
	 *