pkg toposort, func DumpCycles([][]interface{}, func(interface{}) string) string
pkg toposort, method (*Sorter) AddEdge(interface{}, interface{})
pkg toposort, method (*Sorter) AddNode(interface{})
pkg toposort, method (*Sorter) Sort() ([]interface{}, [][]interface{})
pkg toposort, type Sorter struct