code: public java.util.List<String> getPolicyNames() {
          if (policyNames == null) {
              policyNames = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return policyNames;
      }
docs: <p>
  The names of one or more policies. If you omit this parameter, all policies are described. If a group name is
  provided, the results are limited to that group. This list is limited to 50 items. If you specify an unknown
  policy name, it is ignored with no error.
  </p>
  
  @return The names of one or more policies. If you omit this parameter, all policies are described. If a group
  name is provided, the results are limited to that group. This list is limited to 50 items. If you specify
  an unknown policy name, it is ignored with no error.