def write_layout(layout = nil, type = nil) # :nodoc:
      tag = 'c:layout'

      if layout
        @writer.tag_elements(tag)  { write_manual_layout(layout, type) }
      else
        @writer.empty_tag(tag)
      end
    end
def write_layout(layout = nil, type = nil) # :nodoc:
      tag = 'c:layout'

      if layout
        @writer.tag_elements(tag)  { write_manual_layout(layout, type) }
      else
        @writer.empty_tag(tag)
      end
    end
Write the <c:layout> element.