class HexaPDF::DigitalSignature::Signature::TransformParams

def perform_validation #:nodoc:
  super
  # We need to perform the checks here since the values are arrays and not single elements
  if (annots = self[:Annots]) && !(annots = annots.value - FIELD_ANNOTS_ALLOWED_VALUES).empty?
    yield("Field /Annots contains invalid entries: #{annots.join(', ')}", true)
    value[:Annots].value -= annots
  end
  if (form = self[:Form]) && !(form = form.value - FIELD_FORM_ALLOWED_VALUES).empty?
    yield("Field /Form contains invalid entries: #{form.join(', ')}", true)
    value[:Form].value -= form
  end
  if (ef = self[:EF]) && !(ef = ef.value - FIELD_EF_ALLOWED_VALUES).empty?
    yield("Field /EF contains invalid entries: #{ef.join(', ')}", true)
    value[:EF].value -= ef
  end
end