How would I use a Claude model with VertexAI? For example 3.5? Keep getting model not found.

const response = session
  .chat(threadId, {
    messages,
  })
  .sendStream({
    model: 'vertexai/claude-3-5-sonnet-v2',
    prompt: input,
  });

const response = session
  .chat(threadId, {
    messages,
  })
  .sendStream({
    model: 'vertexai/claude-3-5-sonnet-v2',
    prompt: input,
  });

Unhandled error GenkitError: NOT_FOUND: Model 'vertexai/claude-3-5-sonnet-v2' not found at resolveModel

Unhandled error GenkitError: NOT_FOUND: Model 'vertexai/claude-3-5-sonnet-v2' not found at resolveModel