function hashGet(key) {
  var data = this.__data__;
  if (nativeCreate) {
    var result = data[key];
    return result === HASH_UNDEFINED ? undefined : result;
  }
  return hasOwnProperty.call(data, key) ? data[key] : undefined;
}
Gets the hash value for `key`.

@private
@name get
@memberOf Hash
@param {string} key The key of the value to get.
@returns {*} Returns the entry value.