code: private void assertParameterNotEmpty(String parameterValue, String errorMessage) {
          if (StringUtils.isNullOrEmpty(parameterValue)) {
              throw new SdkClientException(errorMessage);
          }
      }
docs: <p> Asserts that the specified parameter value is neither <code>empty</code> nor null, and if
  it is, throws a <code>SdkClientException</code> with the specified error message. </p>
  
  @param parameterValue The parameter value being checked.
  @param errorMessage   The error message to include in the SdkClientException if the
  specified parameter value is empty.