Get the BIM structure of a model. The structure is represented in BIMTree which is organized in a tree structure. From the top to bottom, there are BIMModel, BIMLevel, BIMCategory, BIMFamily, BIMType, BIMType. For example, a model can contain a few levels and a level can contain a few categories. So far so forth.
function getTreeInfo(modelId: string): Promise<_BIMTree>;
|modelId||The model id|
a promise contains BIMTree object