MrpProperty represents a custom property in the project. MrpProperty is a typedef to #GParamSpec. It is used to add properties to projects, resources and tasks in run time, for example by the user of a GUI application, or plugins that add functionality. Object representing a custom property in the project. The different types of custom properties. Cost and duration are simply float and integer values, but the extra information provided makes it possible to format the values properly in a GUI. @MRP_PROPERTY_TYPE_NONE: invalid (unset type) @MRP_PROPERTY_TYPE_INT: integer type @MRP_PROPERTY_TYPE_FLOAT: float type @MRP_PROPERTY_TYPE_STRING: string type @MRP_PROPERTY_TYPE_STRING_LIST: not implemented @MRP_PROPERTY_TYPE_DATE: date type @MRP_PROPERTY_TYPE_DURATION: duration type @MRP_PROPERTY_TYPE_COST: cost type (float) @name: @type: @label: @description: @user_defined: @Returns: @property: @Returns: @property: @Returns: @property: @label: @property: @Returns: @property: @description: @property: @Returns: @property: @user_defined: @property: @Returns: @property: @Returns: @property: @type: @Returns: