{
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                                "vx": "0",
                                "vy": "0",
                                "child": {},
                                "link":{},
                                "collisionDetection": "AinsideB",
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                                "tag": []
                            },
                            "extrusion2": {
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                                "vx": "0",
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                            }
                        },
                        "link":{},
                        "collisionDetection": "AintersectB",
                        "effect": [],
                        "tag": ["destroyableBehavior","solid"]
                    }
                },
                "link":{},
                "collisionDetection": "AintersectB",
                "effect": [],
                "tag": ["gravity"]
            }
        },
        "link":{},
        "collisionDetection": "AintersectB",
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        "tag": []
    }
}