docs: def props_value(props):
  
  	"""
  	Properties value.
  	
  	:param dict props:
  	   Properties dictionary.
  	:rtype:
  	   str
  	:return:
  	   Properties as string.
  	"""
  	
  	sep = ""
  	result_value = ""
  	for prop_key, prop_value in props.items():
  		result_value = "{}{}{}={}".format(
  			result_value,
  			sep,
  			prop_key,
  			prop_value
  		)
  		sep = ":"
  	return result_value