Stateful transforms are simple objects with member functions that maintain state across calls:
Imagine a vast shopping mall parking lot with thousands of individual parking spots and internal lanes (representing road segments within a cluster). No matter how complex it is inside, there are usually only a few key exits to the main roads. Our goal was to identify these natural "exits" for each map cluster. For instance, the complex road network around Amsterdam Airport Schiphol (see on OpenStreetMap) has many internal roads but limited primary access points.，更多细节参见爱思助手下载最新版本
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PYBackend (Python / FastAPI)。91视频对此有专业解读
+save(item: Item)
; IRETD — check if returning to V86 mode