Creating and using an incremental source generator

namespace Endpoints;

[GenerateHttpEndpoints] // better name ideas?
public partial class User
{
  [HttpPost("/api/users")]
  public async Task<ActionResult<Entities.User>> Create(
    string name,
    string email,
    string password)
  {
    // ...

    return Ok(createdUser);
  }
}

file record CreateUserDto(
  string Name,
  string Email,
  string Password);

// other things related to handling the command