Google Api Client test trying to get random result from next pages

gsearch.rb

require 'google/api_client'

def gsearch(searchstr, ftype: 'jpg', start: nil, depth: nil)
  puts "Entering function with depth: \"#{depth}\""
  client = Google::APIClient.new(:application_name => 'IRC Bot Search Helper',
        :application_version => '0.0.1',
        :client_id => cid,
        :client_secret => cs,
        :authorization => nil)
  search = client.discovered_api('customsearch')

  parameters = {
    'q' => searchstr,
    'key' => key,
    'cx' => cx,
    'searchType' => 'image',
    'fileType' => ftype
  }
  if start
    parameters['start'] = start
    parameters['max-results'] = 10
  end
  response = client.execute(
    :api_method => search.cse.list,
    :parameters => parameters
  )

  body = JSON.parse(response.body)
  #puts body['queries']
  if depth == nil
    depth = rand(5)
  end

  if body['queries'].has_key?('nextPage')
    tok = body['queries']['nextPage'][0]['startIndex']
  else
    tok = nil
  end

  if depth == 0 or !tok
    puts "Depth: #{depth}, returning body"
    return body
  end
  puts "Made it to the end, recursing with depth: #{depth}"
  return gsearch(search, start: tok, depth: depth - 1)
end

body = gsearch('quokka selfies')
#puts body.keys()
#puts
#body.keys().each() do |k|
#  puts body[k]
#  puts
#end

body['items'].each() do |i|
  puts i['link']
end

This breaks on line 56:
gsearch.rb:56:in

': undefined method each' for nil:NilClass (NoMethodError)

because the nextPage/next_page_token/parameters['start']/etc doesn't work.

If we force it to drop out before trying to get the next page, it works just fine.