README

Interfaces:

Symfony validator is required and can not be replaced.
All validation rules must be provided from Symfony Validator Constraints list.
Uuid Interface is provided by symfony/uid package
Only DateTimeImmutable objects are used

Makefile

Install composer packages:
make composer:install

Require composer package:
make composer:require p=symfony/validator

make tests:run
or with filter:
make tests:run f=CreateElementHandlerTest

make stan

Add assertions to every field type (e.g. StringType must contain StringValue which checks base validation rules like is_string or max_length=200) and for element (e.g. field name cannot be duplicated)
configuration validator + ConfigurationIsInvalidException
encryption for field on demand (in configuration)
element name property should be changed to something like group, band or something
every field should have own constraints instead of holding it in configuration array (and configuration can hold additional constraints)
add some TestField to use it in tests to not use real field
what about read model? do we need any bus for it?
write more about makefile in readme
fields should contain basic constraints (eg. string must be string and max length is 255)
FieldsDtoValidator: rename this class + validate configuration field type (type can be invalid e.g. not exist)
FieldsDtoValidator should be a default one for usage
transactional manager interface?
add assertion class
validation failed exception could be used form symfony package
test for empty constraints (allowMissingFields) is set to true
when tests are run in docker it creates container and it is not reusable (every time make run:tests is run, new container is created)