class RuboCop::Cop::IfThenCorrector

def replacement(node = if_node, indentation = nil)
  indentation = ' ' * node.source_range.column if indentation.nil?
  if_branch_source = node.if_branch&.source || 'nil'
  elsif_indentation = indentation if node.respond_to?(:elsif?) && node.elsif?
  if_branch = <<~RUBY
    #{elsif_indentation}#{node.keyword} #{node.condition.source}
    #{indentation}#{branch_body_indentation}#{if_branch_source}
  RUBY
  else_branch = rewrite_else_branch(node.else_branch, indentation)
  if_branch + else_branch
end