Gem::SpecificationPolicy#validate_licenses_length

# File tmp/rubies/ruby-3.4.1/lib/rubygems/specification_policy.rb, line 380
def validate_licenses_length
  licenses = @specification.licenses

  licenses.each do |license|
    next if license.nil?

    if license.length > 64
      error "each license must be 64 characters or less"
    end
  end
end