curl -i -X POST "https://api.box.com/2.0/users/12345/email_aliases" \
     -H "authorization: Bearer <ACCESS_TOKEN>" \
     -H "content-type: application/json" \
     -d '{
       "email": "alias@example.com"
     }'

client.email_aliases.create_user_email_alias(new_user.id, new_alias_email)

await client.emailAliases.createUserEmailAlias(newUser.id, {
  email: newAliasEmail,
} satisfies CreateUserEmailAliasRequestBody);

try await client.emailAliases.createUserEmailAlias(userId: newUser.id, requestBody: CreateUserEmailAliasRequestBody(email: newAliasEmail))

client.getEmailAliases().createUserEmailAlias(newUser.getId(), new CreateUserEmailAliasRequestBody(newAliasEmail))

await client.EmailAliases.CreateUserEmailAliasAsync(userId: newUser.Id, requestBody: new CreateUserEmailAliasRequestBody(email: newAliasEmail));

{
  "id": "11446498",
  "type": "email_alias",
  "email": "alias@example.com",
  "is_confirmed": true
}

{
  "type": "error",
  "status": 400,
  "code": "item_name_invalid",
  "message": "Method Not Allowed",
  "context_info": {
    "message": "Something went wrong"
  },
  "help_url": "https://developer.box.com/guides/api-calls/permissions-and-errors/common-errors/",
  "request_id": "abcdef123456"
}