code: function camelize(obj, opts) {
      for (let key in obj) {
          if (Array.isArray(obj[key])) {
              obj[key] = obj[key].map((item) => {
                  return camelize(item, opts);
              });
          } else if (typeof obj === 'string') {
              return obj;
          } else if (typeof obj[key] === 'object' &&
              !(obj[key] instanceof Date) &&
              obj[key] !== null) {
              obj[key] = camelize(obj[key], opts);
          }
      }
  
      return camelcaseKeys(obj, opts);
  }
docs: /* eslint prefer-const:0 
  Will take any object property that is capitalized
  and return it in camelCase.
  @param { Object } obj The object to be mutated.
  @param { Object } opts Options to pass to camelcaseKeys.
  @returns { Object } The "camelized" object.