@Override
	public DataType clone(DataTypeManager dtm) {
		if (dtm == getDataTypeManager()) {
			return this;
		}
		return new FileTimeDataType(dtm);
	}
A datatype to interpret the FILETIME timestamp
convention, which is based on the number of 100-nanosecond ticks
since January 1, 1601.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/FileTimeDataType.java