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-rw-r--r--lib/axlsx/drawing/graphic_frame.rb3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/axlsx/drawing/graphic_frame.rb b/lib/axlsx/drawing/graphic_frame.rb
index d123e58a..6466a656 100644
--- a/lib/axlsx/drawing/graphic_frame.rb
+++ b/lib/axlsx/drawing/graphic_frame.rb
@@ -28,6 +28,9 @@ module Axlsx
"rId#{@anchor.index+1}"
end
+ # Serializes the object
+ # @param [String] str
+ # @return [String]
def to_xml_string(str = '')
str << '<xdr:graphicFrame>'
str << '<xdr:nvGraphicFramePr>'