private void findNext() {
			if (nextRealSymbol == null) {
				findNextRealSymbol();
			}
			if (nextDynamicSymbol == null) {
				findNextDynamicSymbol();
			}
			if (compareSymbols(nextRealSymbol, nextDynamicSymbol) < 0) {
				nextSymbol = nextRealSymbol;
				nextRealSymbol = null;
			}
			else {
				nextSymbol = nextDynamicSymbol;
				nextDynamicSymbol = null;
			}
		}
Called by the NamespaceManager when a namespace is removed; remove all symbols that have the
given namespace ID.

@param namespaceID ID of namespace being removed
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/symbol/SymbolManager.java