session.index.create ignores ifnotexist

[Aeonrush]

Hi
OrientDB Docker image tag: 3.0.25
Orientjs: 3.0.8

Example

const session = await pool.acquire();
session.index.create({
  name: 'User._username',
  class: 'User',
  type: 'UNIQUE',
  properties: ['username'],
  ifnotexist: true
})

I'm getting an Error

  throw e;
  ^
OrientDB.RequestError: Index User._username already exists