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optional string start_date = 1
optional string end_date = 2
optional string placeholder_start_date = 3
optional string placeholder_end_date = 4
optional bool disabled = 5
optional bool required = 6
optional bool readonly = 7
optional bool hide_required_marker = 8
optional string color = 9
optional string float_label = 10
optional string appearance = 11
optional string subscript_sizing = 12
optional string hint_label = 13
optional string label = 14
optional string on_change_handler_id = 15