docs: function getValidators(subjDesc, element, validationSets) {
  
  	const validators = subjDesc.validators;
  
  	if (!validators)
  		return null;
  
  	const allValidators = new Array();
  	for (let set in validators) {
  		if (element && !set.startsWith('element:'))
  			continue;
  		if (validationSets.has(element ? set.substring('element:'.length) : set))
  			for (let validator of validators[set])
  				allValidators.push(validator);
  	}
  
  	return (allValidators.length > 0 ? allValidators : null);
  }