private boolean isInner(String internalName) {
		int splitIndex = internalName.lastIndexOf("$");
		// Ensure there is text before and after the split
		return splitIndex > 1 && splitIndex < internalName.length() - 1;
	}
@param internalName
		Some class name.

@return {@code true} when the class by the given name is an inner class of another class.
recaf-core/src/main/java/software/coley/recaf/services/mapping/MappingsAdapter.java