class RuboCop::Cop::Metrics::AbcSize

and en.wikipedia.org/wiki/ABC_Software_Metric.
(method calls), and conditions. See c2.com/cgi/wiki?AbcMetric<br>configured maximum. The ABC size is based on assignments, branches
This cop checks that the ABC size of methods is not higher than the

def complexity(node) 

def complexity(node)
  Utils::AbcSizeCalculator.calculate(node)
end