### Question:
Gas { public Bytes toMinimalBytes() { return Bytes.minimalBytes(value); } private  Gas(long value); static Gas valueOf(UInt256 value); static Gas valueOf(long value); static Gas valueOf(BigInteger value); Wei priceFor(Wei gasPrice); Gas add(Gas other); @Override boolean equals(Object o); @Override int hashCode(); @Override String toString(); long toLong(); Bytes toBytes(); Bytes toMinimalBytes(); int compareTo(long other);  }### Answer:
@Test void testToMinimalBytes() { assertEquals(Bytes.fromHexString("0x01"), Gas.valueOf(1L).toMinimalBytes()); }