I have created a base model class with is a model for the incoming data, I will be modeling the data inside of a class for some external reasons. Although I ran into a problem with is defining the incoming data into this model class.

This is my class

export class EntityBasic {
  constructor(
    public id: string,
    public title: string,
    public urn?: string,
    public risk_level?: string,
    public be_aware?: string,
    public body?: string,
    public published_at?: string,
    public created_at?: string,
    public updated_at?: string,
    public description?: string,
    public notes?: string,
  ) {}}
}

How I define the content inside of it in another page:

public getEntity(setEntity) {
    return new EntityBasic(
      setEntity.id,
      setEntity.title,
      setEntity?.urn,
      setEntity?.risk_level,
      setEntity?.be_aware,
      setEntity?.body,
      setEntity?.published_at,
      setEntity?.created_at,
      setEntity?.updated_at,
      setEntity?.report?.summary || '',
      setEntity?.report?.metadata?.source_notes,
      setEntity?.report?.metadata?.notes,
    );
  }

But defining the data like so, gave me problems, since some times there won't be a urn, or a risk_level for example, and the data will be messed up inside the class.
I would like a way to define like so (This didnt work):

public getEntity(setEntity) {
    return new EntityBasic(
      id = setEntity.id,
      title = setEntity.title,
      urn = setEntity?.urn,
      risk_level = setEntity?.risk_level,
    )
}