public List<Enumeration<PropertyRepresentation>> getRepresentation() { 
      if (this.representation == null)
        this.representation = new ArrayList<Enumeration<PropertyRepresentation>>();
      return this.representation;
    }
public List < Enumeration < PropertyRepresentation > > getRepresentation ( ) { if ( this . representation == null ) this . representation = new ArrayList < Enumeration < PropertyRepresentation > > ( ) ; return this . representation ; }
@return {@link #representation} (Codes that define how this element is represented in instances, when the deviation varies from the normal case.)