Bug 210609 [Smoke]Crosstab is failed to preview in runtime
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/extension/ExtendedElementUIPoint.java
classMap.put(IExtensionConstants.ELEMENT_BUILDER, reportItemBuilderUI);
	}
	/**
	 * Sets the corresponding attribute of the key of the extended element
	 * 
	 * @param key
	 *            the key of the attribute.It cannot be null
	 */
	void setAttribute(String key, Object value) {
		Assert.isLegal(key != null);
		attributesMap.put(key, value);
	}
	/**
	 * Set the corresponding class instance of the key of the extended element
	 * 
	 * @param className
	 * @param object
	 */
	public void setClass(String key, Object value) {
		classMap.put(key, value);
	}
    /**
     * Set the extension Name of this extension point
     * @param value
     */
    public void setExtensionName( String value )
    {
        this.extensionName = value;
    }
}