code: public ListWorkersWithQualificationTypeResult withQualifications(Qualification... qualifications) {
          if (this.qualifications == null) {
              setQualifications(new java.util.ArrayList<Qualification>(qualifications.length));
          }
          for (Qualification ele : qualifications) {
              this.qualifications.add(ele);
          }
          return this;
      }
docs: <p>
  The list of Qualification elements returned by this call.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setQualifications(java.util.Collection)} or {@link #withQualifications(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param qualifications
  The list of Qualification elements returned by this call.
  @return Returns a reference to this object so that method calls can be chained together.