public int getNumPayloadCasesAndPayloadSizeOffset() {
		return numPayloadCasesAndPayloadSizeOffset;
	}
Gets the number of non-empty cases in the enum are in the low 24 bits; the offset of the 
payload size in the metadata record in words, if any, is stored in the high 8 bits;
@return The number of non-empty cases in the enum and the offset of the payload size
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/swift/types/TargetEnumDescriptor.java