code: function deepObj(pathKeys, obj, createEntries = true) {
    return pathKeys.reduce((prev, curr) => {
      if (typeof prev[curr] === 'undefined') {
        if (createEntries) {
          prev[curr] = {};
        } else {
          DrizzleError.error(
            new DrizzleError(
              `Property ${curr} not found on supplied object`,
              DrizzleError.LEVELS.ERROR
            )
          );
        }
      }
      return prev[curr];
    }, obj);
  }
docs: Return a reference to the deeply-nested object indicated by the items
  in `pathKeys`. If `createEntries`, entry levels will be created as needed
  if they don't yet exist on `obj`.
  
  @param {Array} pathKeys    Elements making up the "path" to the reference
  @param {Object}            Object to add needed references to
  
  @example deepRef(['foo', 'bar', 'baz'], { foo: {} }, true); // => foo.bar.baz