docs: @Override
    public void execute() throws BuildException {
      validate();
  
      String seedValue = Strings.emptyToNull(getProject().getProperty(propertyName)); 
      if (seedValue == null) {
        seedValue = SeedUtils.formatSeed(new Random().nextLong());
        log("Picking master seed for property '" + propertyName + "': "
            + seedValue, Project.MSG_VERBOSE);
        getProject().setProperty(propertyName, seedValue);
      } else {
        log("Seed property '" + propertyName + "' already defined: "
            + seedValue, Project.MSG_INFO);
      }
    }