Bug 148761 Unable to copy a report item from template to report
Steps: 1. Create a template, add a Text item "t1" or others 2. Create template item using "t1" 3. Double click the template item and we get a report item again. 4. We copy the item, paste to another report file. Expected: the text item can be copied. Actual result: Nothing happened, not copied and no error msg.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ElementDefn.java
assert !isBuilt;
		javaClass = theClass;
	}
	/**
	 * Sets the name of the style which "selects" this element.
	 * 
	 * @param value
	 *            The predefined style name.
	 */
	void setSelector( String value )
	{
		selector = value;
	}
	/**
	 * Sets the "extends" attribute.
	 * 
	 * @param base
	 *            The name of the element type which this element extends.
	 */
	void setExtends( String base )
	{
		assert !isBuilt;
		extendsFrom = base;
	}
	/**
	 * Sets the "supports user properties" attribute.
	 * 
	 * @param flag
	 *            True if the element allows user-defined properties, false
	 *            otherwise.