Bug 149922 Image builder - URI and file source type are treated as same
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
DesignSchemaConstants.HEADER_TAG );
		writeContents( obj, TableGroup.FOOTER_SLOT,
				DesignSchemaConstants.FOOTER_TAG );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.design.elements.DesignVisitor#visitColumn(org.eclipse.birt.report.model.design.elements.TableColumn)
	 */
	public void visitColumn( TableColumn obj )
	{
		
		
		writer.startElement( DesignSchemaConstants.COLUMN_TAG );
		writer.attribute( DesignSchemaConstants.ID_ATTRIB, new Long( obj
				.getID( ) ).toString( ) );
		attribute( obj, DesignSchemaConstants.VIEW_ACTION_ATTRIB,
				DesignElement.VIEW_ACTION_PROP );
		super.visitColumn( obj );
		property( obj, TableColumn.WIDTH_PROP );
		property( obj, TableColumn.REPEAT_PROP );
		property( obj, TableColumn.SUPPRESS_DUPLICATES_PROP );
		writeStructureList( obj, TableColumn.VISIBILITY_PROP );
		writeStyle( obj );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 *