Cytoscape.js 使用eles.breadthFirstSearch（）在其遍历的节点上执行操作

eles.breadthFirstSearch（）是否可以用于在它所经过的节点上执行操作？
从文件中：

eles.breadthFirstSearch( [function(i, depth)] [, directed] )
function(i, depth) A handler function that is called when a node is visited in the search.
– i The index indicating this node is the ith visited node.
– depth How many edge hops away this node is from the root nodes.
directed A boolean indicating whether the search should only go along edges from source to target (default true).

看起来回调函数只提供了索引和深度

如果这不是正确的功能，是否还有其他更好的功能

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谢谢

环境变量“this”包含当前节点

对于所有遍历函数都是一样的，就像jQuery一样