docs: function normalizeArguments()
  {
      const a = arguments;
  
      if (debug) debugLog(`normalizeArguments: arguments:${util.inspect(arguments)}`);
      if (debug) debugLog(`normalizeArguments: a0: ${a[0]} a1:${a[1]} a2:${a[2]} a3:${a[3]}`);
      if (debug) debugLog(`normalizeArguments: a0: ${typeof a[0]} a1:${typeof a[1]} a2:${typeof a[2]} a3:${typeof a[3]}`);
      if (debug)
      {
          debugLog(`normalizeArguments:`
          + ` a0: ${typeof a[0]} a1:${typeof a[1]} a2:${Array.isArray(a[2])} a3:${typeof a[3]}`);
      }
  
      let args = {
          name : '',
          description : '',
          prereqs : [],
          /* eslint-disable no-empty-function */
          action : function action() {},
          /* eslint-enable no-empty-function */
  
      };
  
      if ((a.length === 4)
          && (typeof a[3] === 'function')
          && (Array.isArray(a[2]))
          && (typeof a[1] === 'string')
          && (typeof a[0] === 'string'))
      {
          // all 4 arguments provided and of the correct type
          args.name = a[0];
          args.description = a[1];
          args.prereqs = a[2];
          args.action = a[3];
      }
      else if ((a.length === 3)
          && (typeof a[2] === 'function')
          && (Array.isArray(a[1]))
          && (typeof a[0] === 'string'))
      {
          // only 3 arguments types string, array, function
          args.name = a[0];
          args.prereqs = a[1];
          args.action = a[2];
      }
      else if ((a.length === 3)
          && (typeof a[2] === 'function')
          && (typeof a[1] === 'string')
          && (typeof a[0] === 'string'))
      {
          // only 3 arguments types string string, function
          args.name = a[0];
          args.description = a[1];
          args.action = a[2];
      }
      else if ((a.length === 2)
          && (typeof a[1] === 'function')
          && (typeof a[0] === 'string'))
      {
          // only 2 arguments - they must be -  types string, function
          args.name = a[0];
          args.action = a[1];
      }
      else
      {
          args = undefined;
      }
  
      return args;
  }