public String encodePiece() {
		StringBuilder buffer = new StringBuilder();
		Address addr = address;
		AddressSpace space = addr.getAddressSpace();
		buffer.append(space.getName());
		buffer.append(":0x");
		long off = addr.getUnsignedOffset();
		buffer.append(Long.toHexString(off));
		buffer.append(':');
		buffer.append(Integer.toString(size));
		return buffer.toString();
	}
Encode details of the Varnode as a formatted string with three colon separated fields.
  space:offset:size
The name of the address space, the offset of the address as a hex number, and
the size field as a decimal number.
@return the formatted String
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/Varnode.java