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/SlotDefn.java
{
		contentTypes.add( type );
	}
	/**
	 * Returns the default style name.
	 * 
	 * @return the default style name, or null if this slot does not define a
	 *         default style
	 */
	public String getDefaultStyle( )
	{
		
		
		return null;
	}
	/**
	 * Sets the predefined style name.
	 * 
	 * @param value
	 *            the predefined style name to set
	 */
	void setSelector( String value )
	{
		selector = value;
	}
	/**
	 * Returns the predefined style name.
	 * 
	 * @return the predefined style name, or null if this slot does not define a
	 *         predefined style