Getting Global Items for Solver Data

You can use SolverData APIs to get the maximum element ID, maximum node ID, and maximum element type for the Ansys solver target.

To get the maximum element ID:
```
solver_data.MaxElementId
```
To get the maximum node ID:
```
solver_data.MaxNodeId
```
To get the maximum element type:
```
solver_data.MaxElementType
```
To get the node IDs associated with a material ID:
```
solver_data.NodeIdsByMaterialId(int matId)
```
To get the element IDs associated with a material ID:
```
solver_data.ElementIdsByMaterialId(int matId)
```

Important: The following functions should be used with the background thread.

NodeIdsByMaterialId
ElementIdsByMaterialId

To use these functions with a Mechanical callback, such as OnSolve, OnGenerate, or Evaluate, the callback must be used with the tag: InvokeUIThread=False.