protected final synchronized int addComp(DataType dataType, int length, String fieldName,
			List<DataTypeComponent> comps, int offset) {
		comps.add(new ReadOnlyDataTypeComponent(dataType, this, length, comps.size(), offset,
			fieldName, null));
		return offset + length;
	}
Definition of a Bitmap Resource Data Structure defined within the
resources section of a windows executable.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/BitmapResourceDataType.java