Bug 197228 Need updaet createdBy info when serialize the module
When open module, designer will pass the property map which contains the createdBy info. this info should be retained by moduleHandle and then be updated and written when doing serialization. Note if this info is null, model should not update it during serialization. This could happen for api users or third-party designer. For BIRT designer, it will guarantee this value always not null.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
}
		
		if ( !names.contains( image.getName( ) ) )
			return;
		
		int index = 0;
		String name = image.getName( );
		String baseName = image.getName( );
		while ( names.contains( name ) )
		{
			name = baseName + ++index;
		}
		image.setName( name.trim( ) );
	}
	/**
	 * Checks the element name in name space of this report.
	 * 
	 * <ul>
	 * <li>If the element name is required and duplicate name is found in name
	 * space, rename the element with a new unique name.
	 * <li>If the element name is not required, clear the name.
	 * </ul>
	 * 
	 * @param element
	 *            the element handle whose name is need to check.
	 */
	public void rename( DesignElement element )
	{
		nameHelper.rename( element );
	}