code: protected Properties setupProperties() {
          // use the System properties in case the user specified them as
          // -Dprop=<val> to the JVM directly.
          Properties props = System.getProperties();
  
          if (argOptions.hasOption("transform")) {
              props.setProperty(VectorSpaceModel.MATRIX_TRANSFORM_PROPERTY,
                                argOptions.getStringOption("transform"));
          }
  
          return props;
      }
docs: {@inheritDoc}