private boolean shouldCopyExtSymbol(Symbol extSym) {
		return !extSym.getParentNamespace().isLibrary();
	}
Imports symbols from an external debug program (typically created via a reverse strip) into
the program that contains the executable code that the symbols will be applied to.
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/ExternalDebugFileSymbolImporter.java