MarkerType
边可以选择在任一端有一个标记。MarkerType 类型枚举配置给定标记时可用的选项。
¥Edges may optionally have a marker on either end. The MarkerType type enumerates the options available to you when configuring a given marker.
export enum MarkerType {
Arrow = 'arrow',
ArrowClosed = 'arrowclosed',
}