@Override
	public ByteField copyField() {
		if (isNull()) {
			ByteField copy = new ByteField();
			copy.setNull();
			return copy;
		}
		return new ByteField((byte) getLongValue());
	}
Construct a byte field with an initial value of b.
@param b initial value
@param immutable true if field value is immutable
Ghidra/Framework/DB/src/main/java/db/ByteField.java