class Aws::Plugins::SQSMd5s

not match.
‘Aws::Errors::Checksum` errors are raised for cases where checksums do
an SQS queue and matched against MD5 checksums returned by Amazon SQS.
When `true` MD5 checksums will be computed for messages sent to
@seahorse.client.option [Boolean] :verify_checksums (true)

def add_handlers(handlers, config) 

def add_handlers(handlers, config)
  if config.verify_checksums
    handlers.add(Handler, {
      priority: 10 ,
      step: :validate,
      operations: SQSMd5s::OPERATIONS_TO_VERIFY
    })
  end
end