message Point { | |
required int32 x = 1; | |
required int32 y = 2; | |
optional string label = 3; | |
} | |
message Line { | |
required Point start = 1; | |
required Point end = 2; | |
optional string label = 3; | |
} | |
message Polyline { | |
repeated Point point = 1; | |
optional string label = 2; | |
} |
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