code: public HIT withQualificationRequirements(QualificationRequirement... qualificationRequirements) {
          if (this.qualificationRequirements == null) {
              setQualificationRequirements(new java.util.ArrayList<QualificationRequirement>(qualificationRequirements.length));
          }
          for (QualificationRequirement ele : qualificationRequirements) {
              this.qualificationRequirements.add(ele);
          }
          return this;
      }
docs: <p>
  Conditions that a Worker's Qualifications must meet in order to accept the HIT. A HIT can have between zero and
  ten Qualification requirements. All requirements must be met in order for a Worker to accept the HIT.
  Additionally, other actions can be restricted using the <code>ActionsGuarded</code> field on each
  <code>QualificationRequirement</code> structure.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setQualificationRequirements(java.util.Collection)} or
  {@link #withQualificationRequirements(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param qualificationRequirements
  Conditions that a Worker's Qualifications must meet in order to accept the HIT. A HIT can have between
  zero and ten Qualification requirements. All requirements must be met in order for a Worker to accept the
  HIT. Additionally, other actions can be restricted using the <code>ActionsGuarded</code> field on each
  <code>QualificationRequirement</code> structure.
  @return Returns a reference to this object so that method calls can be chained together.