public int getHostClassIndex() {
		return host_class_index & 0xffff;
	}
The value of the {@code host_class_index} item must be a valid index into the constant
pool. The entry at that index must be a {@link ConstantPoolClassInfo} structure representing
a class or interface which is the nest host for the current class or interface.
@return {@code host_class_index}
Ghidra/Processors/JVM/src/main/java/ghidra/javaclass/format/attributes/NestHostAttribute.java