class RuboCop::Cop::Lint::DuplicateBranch

def offense_range(duplicate_branch)
  parent = duplicate_branch.parent
  if parent.respond_to?(:else_branch) && parent.else_branch.equal?(duplicate_branch)
    if parent.if_type? && parent.ternary?
      duplicate_branch.source_range
    else
      parent.loc.else
    end
  else
    parent.source_range
  end
end