lib/vendor/sugar.js
function buildObjectInstanceMethods(set, target) {
    extendSimilar(target, true, false, set, function(methods, name) {
      methods[name + (name === 'equal' ? 's' : '')] = function() {
        return object[name].apply(null, [this].concat(multiArgs(arguments)));
      }
    });
  }
function buildObjectInstanceMethods(set, target) {
    extendSimilar(target, true, false, set, function(methods, name) {
      methods[name + (name === 'equal' ? 's' : '')] = function() {
        return object[name].apply(null, [this].concat(multiArgs(arguments)));
      }
    });
  }
Object class methods implemented as instance methods