int getConsumedBits() {
		// TODO: this could be maintained as a field
		int consumed = 0;
		for (DefaultCompositeMember m : list) {
			consumed += ((BitFieldDataType) m.getDataType()).getBitSize();
		}
		return consumed;
	}
<code>BitFieldGroupCompositeMember</code> provides the ability to collect related
{@link DefaultCompositeMember} members within a group during the composite reconstruction
process.
Ghidra/Features/PDB/src/main/java/ghidra/app/util/bin/format/pdb/BitFieldGroupCompositeMember.java