code: public boolean hasField(@NonNull String fieldName) {
        return ClassDescriptorCache.getInstance()
                                   .getClassDescriptor(clazz)
                                   .getFields(accessAll)
                                   .stream()
                                   .anyMatch(f -> f.getName().equals(fieldName));
     }
docs: Has field boolean.
  
  @param fieldName the field name
  @return the boolean