public String getTruncatedPackagePath() {
		return packagePath != null && packageName != null &&
			packagePath.length() > packageName.length()
					? packagePath.substring(0, packagePath.length() - packageName.length())
					: null;
	}
Returns the portion of the package path before the package name, eg. "internal/sys" would
become "internal/".

@return package path, without the trailing package name, or empty string if there is no path 
portion of the string
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/golang/rtti/GoSymbolName.java