code: public java.util.List<String> getPolicyTypes() {
          if (policyTypes == null) {
              policyTypes = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return policyTypes;
      }
docs: <p>
  One or more policy types. The valid values are <code>SimpleScaling</code>, <code>StepScaling</code>, and
  <code>TargetTrackingScaling</code>.
  </p>
  
  @return One or more policy types. The valid values are <code>SimpleScaling</code>, <code>StepScaling</code>, and
  <code>TargetTrackingScaling</code>.