super(alphabet, null);
      checkArgument(alphabet.chars.length == 16);
      for (int i = 0; i < 256; ++i) {
        encoding[i] = alphabet.encode(i >>> 4);
        encoding[i | 0x100] = alphabet.encode(i & 0xF);
      }
    }

    @Override
    void encodeTo(Appendable target, byte[] bytes, int off, int len) throws IOException {
      checkNotNull(target);
      checkPositionIndexes(off, off + len, bytes.length);

      super(alphabet, null);
      checkArgument(alphabet.chars.length == 16);
      for (int i = 0; i < 256; ++i) {
        encoding[i] = alphabet.encode(i >>> 4);
        encoding[i | 0x100] = alphabet.encode(i & 0xF);
      }
    }

    @Override
    void encodeTo(Appendable target, byte[] bytes, int off, int len) throws IOException {
      checkNotNull(target);
      checkPositionIndexes(off, off + len, bytes.length);

			name:          "JitterAlloc",
			gcPercent:     100,
			memoryLimit:   math.MaxInt64,
			globalsBytes:  32 << 10,
			nCores:        8,
			allocRate:     random(13, 0xf).offset(132),
			scanRate:      constant(1024.0),
			growthRate:    constant(2.0).sum(ramp(-1.0, 12), random(0.01, 0xe)),
			scannableFrac: constant(1.0),
			stackBytes:    constant(8192),
			length:        50,