@type t() :: %ExBifrost.Model.CohereChatResponseMessage{
  content: [ExBifrost.Model.CohereChatResponseMessageContentInner.t()] | nil,
  role: String.t() | nil,
  tool_calls:
    [ExBifrost.Model.CohereChatV2200ResponseDeltaMessageToolCallsOneOf.t()]
    | nil,
  tool_plan: String.t() | nil
}