code: function repeat(string, n) {
          string = toString(string);
          n = toInteger(n);
          var result = '';
          if (!string || n < 1 || n > MAX_SAFE_INTEGER) {
            return result;
          }
          // Leverage the exponentiation by squaring algorithm for a faster repeat.
          // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
          do {
            if (n % 2) {
              result += string;
            }
            n = nativeFloor(n / 2);
            string += string;
          } while (n);
          return result;
        }
docs: Repeats the given string `n` times.
  
  @static
  @memberOf _
  @category String
  @param {string} [string=''] The string to repeat.
  @param {number} [n=0] The number of times to repeat the string.
  @returns {string} Returns the repeated string.
  @example
  
  _.repeat('*', 3);
  // => '***'
  
  _.repeat('abc', 2);
  // => 'abcabc'
  
  _.repeat('abc', 0);
  // => ''