code: public boolean containsField(String name) {
        if (StringUtils.isNullOrBlank(name)) {
           return false;
        }
        return ClassDescriptorCache.getInstance()
                                   .getClassDescriptor(clazz)
                                   .getFields(accessAll)
                                   .stream()
                                   .anyMatch(f -> f.getName().equals(name));
     }
docs: Determines if a field with the given name is associated with the class
  
  @param name The field name
  @return True if there is a field with the given name