private static String removeFirstUseOffset(String str) {
		int index = str.lastIndexOf('_');
		if (index < 0) {
			return str;
		}
		try {
			Integer.parseInt(str.substring(index + 1));
			return str.substring(0, index);
		}
		catch (NumberFormatException e) {
			// not a number
		}
		return str;
	}
Checks if the given name could be a default external location name

@param name the name to check
@return true if the given name is a possible default external location name
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/symbol/SymbolUtilities.java