private AbstractLabelMsSymbol getValidatedSymbol(MsSymbolIterator iter, boolean iterate) {
		AbstractMsSymbol abstractSymbol = iterate ? iter.next() : iter.peek();
		if (!(abstractSymbol instanceof AbstractLabelMsSymbol labelSymbol)) {
			throw new AssertException(
				"Invalid symbol type: " + abstractSymbol.getClass().getSimpleName());
		}
		return labelSymbol;
	}
Returns label to apply or null if label excluded
@return label to process or null
Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/LabelSymbolApplier.java