code: function (program) {
      var verbosity = program.verbose
      if (program.quiet) {
        verbosity = 0
      } else if (typeof verbosity === 'undefined') {
        verbosity = 1
      }
      return verbosity
    }
docs: Determines the logging verbosity for the specified Commander program
  object.
  @param {Program} program - Commander program / command.
  @returns {Number} Verbosity level where 0 = silence to N = most verbose.