exception for mandatory parameters in plugins and macros

[NN]

Hi All.
Editing my question to help better understand.

In a custom recipe or custom macro 
We have the option to define a parameter as mandatory  "mandatory":true

Can someone please help check if this option works properly for them in their custom recipe/macro.
i.e. a value for the parameter must be supplied in order to use the recipe/macro.

I am trying to check for v 8.0.5 and above.

Thanks

[NN]

Edited..

[AlexT]

The "mandatory" flag does not apply to macros and it will only be used with other plugin components. We have captured this use case and the desire to make certain macro params/fields mandatory and is under review by our product team.

[NN]

Thanks @AlexT 

One Request, Just to help me out can you please check if the Mandatory option is working properly in other plugin components like a Component Recipe?
I faced an issue where it didnt work even on a custom recipe on V9

[AlexT · Accepted solution]

Testing this "required": true works for inputRoles/outputRoles.

However, for params using mandatory or required has no effect within recipe component.  You could handle this in recipe code directly when reading the parameters here is an example of how this is done from another Plugin recipe 

text_column_name = recipe_config.get('text_column_name', None)
if text_column_name is None:
    raise ValueError("You did not choose a text column.")

n_sentences = recipe_config.get('n_sentences', None)
if n_sentences is None:
    raise ValueError("You did not set a number of sentences.")

method = recipe_config.get('method', None)
if method is None:
    raise ValueError("You did not choose a summarization method.")

Let me know if this helps. 

[NN]

Thanks @AlexT 
With so many parameter examples and documents mentioning that option i somehow always assumed that it works.
We shall change all our codes to raise exceptions instead

[akshaykatre]

Thanks @NN , @AlexT ; I noticed this feature and was happy to have found the answer
Just curious, what is the purpose of mandatory/ required in parameters?