* Create add to custom fields documentation
* Update the checkout custom field docs
* Add back end steps and examples
* Make it clear that we are building a field block
* Update docs/third-party-developers/extensibility/rest-api/extend-rest-api-add-custom-fields.md
Co-authored-by: Thomas Roberts <5656702+opr@users.noreply.github.com>
* Update docs/third-party-developers/extensibility/rest-api/extend-rest-api-add-custom-fields.md
Co-authored-by: Thomas Roberts <5656702+opr@users.noreply.github.com>
* Update docs/third-party-developers/extensibility/rest-api/extend-rest-api-add-custom-fields.md
Co-authored-by: Thomas Roberts <5656702+opr@users.noreply.github.com>
* Update docs/third-party-developers/extensibility/rest-api/extend-rest-api-add-custom-fields.md
Co-authored-by: Thomas Roberts <5656702+opr@users.noreply.github.com>
* Mention that the block will not render if parent isn't required
* Add more details about `seExtensionData`
* Add additional code examples for the backend
* Avoid extending store API inside an IntegrationInterface
* Add code example that invokes the extend store endpoint class
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Co-authored-by: Thomas Roberts <5656702+opr@users.noreply.github.com>