@Override
	public SymbolIterator getSymbols(Namespace namespace) {
		if (isDeletedNamespace(namespace)) {
			return SymbolIterator.EMPTY_ITERATOR;
		}
		checkValidNamespaceArgument(namespace);
		return getSymbols(namespace.getID());
	}
Get all external symbols whose original import name matches the specified extLabel with an
optional constraint on a matching Library.
@param library optional Library constraint (may be null to ignore).
@param extProgAddr external program memory address
@return external symbol iterator
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/symbol/SymbolManager.java