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Then, we have to do a UI for admin user to provide inputs for our plugin. In getPropertyOptions method, we already specify have already specifed our Plugin Properties Options definition file is locate at "/properties/ganttChartMenu.json". Let us create a directory "resources/properties" under "gantt_chart_menu/src/main" directory. After create the directory, create a file named "ganttChartMenu.json" in the "properties" folder.
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