final byte[] twoBytes = new byte[] { 'A', 'B' };
        final String encoded = Base64Util.encode(twoBytes);
        assertNotNull("Encoded result should not be null", encoded);
        final byte[] decoded = Base64Util.decode(encoded);
        assertEquals("Decoded should have same length", 2, decoded.length);
        assertEquals("First byte should match", twoBytes[0], decoded[0]);

happen on the heap. var out [{{ .Prefix }}ElementLen]byte return e.bytes(&out) } func (e *{{ .Element }}) bytes(out *[{{ .Prefix }}ElementLen]byte) []byte { var tmp {{ .Prefix }}NonMontgomeryDomainF {{ .Prefix }}FromMontgomery(&tmp, &e.x) {{ .Prefix }}ToBytes(out, (*{{ .Prefix }}UntypedFieldElement)(&tmp)) {{ .Prefix }}InvertEndianness(out[:]) return out[:] } // SetBytes sets e = v, where v is a big-endian {{ .BytesLen }}-byte encoding, and returns e. // If v is not {{ .BytesLen }} bytes or it encodes...