This method is only available on newer versions.
The first available version (v2_6_3) is shown here.
each()
public
Enumerates through the vertices of the graph. @return [Array] The graph’s vertices.
# File lib/bundler/vendor/molinillo/lib/molinillo/dependency_graph.rb, line 16
def each
return vertices.values.each unless block_given?
vertices.values.each { |v| yield v }
end