code: public DeleteInstanceResponse deleteInstance(String instanceName) {
          checkNotNull(instanceName, "request should not be null.");
          InternalRequest httpRequest = createRequest(HttpMethodName.DELETE,
                  MolaDbConstants.URI_INSTANCE,
                  instanceName);
          DeleteInstanceResponse ret = this.invokeHttpClient(httpRequest, DeleteInstanceResponse.class);
          return ret;
      }
docs: <p>
  Delete instance from Moladb
  </p>
  
  <b>NOTE:</b> There MUST be no table within the instance to be deleted.
  
  @param instanceName the name of instance to be deleted.
  
  @return The responseContent from the Delete instance service method, as returned by
  Moladb.
  @throws BceClientException
  If any internal errors are encountered inside the client while
  attempting to make the request or handle the responseContent.  For example
  if a network connection is not available.
  @throws BceServiceException
  If an error responseContent is returned by Moladb indicating
  either a problem with the data in the request, or a server side issue.