class RuboCop::Cop::Style::ColonMethodCall

of the . operator (like FileUtils::rmdir instead of FileUtils.rmdir).
This cop checks for methods invoked via the

operator instead

def autocorrect(node) 

def autocorrect(node)
  ->(corrector) { corrector.replace(node.loc.dot, '.') }
end

def on_send(node) 

def on_send(node)
  # ignore Java interop code like Java::int
  return if java_type_node?(node)
  return unless node.receiver && node.double_colon?
  return if node.camel_case_method?
  add_offense(node, :dot)
end