code: public java.util.List<PolicyVersion> getPolicyVersionList() {
          if (policyVersionList == null) {
              policyVersionList = new com.amazonaws.internal.SdkInternalList<PolicyVersion>();
          }
          return policyVersionList;
      }
docs: <p>
  A list containing information about the versions of the policy.
  </p>
  
  @return A list containing information about the versions of the policy.