Function parseFederatedIfcx

parseFederatedIfcx(
files: FederatedFileInput[],
options?: FederatedParseOptions,
): Promise<FederatedIfcxParseResult>
Parse multiple IFCX files as federated layers.

Files are loaded as layers with the first file being the base (weakest) and subsequent files being overlays (stronger). Layer order can be adjusted after parsing using the returned LayerStack.
Parameters
- files: FederatedFileInput[]
  Array of file buffers with names
- Optionaloptions: FederatedParseOptions
  Parse options
Returns Promise<FederatedIfcxParseResult>
Federated parse result with layer information
Example
```
const result = await parseFederatedIfcx([
  { buffer: baseBuffer, name: 'hello-wall.ifcx' },
  { buffer: overlayBuffer, name: 'add-fire-rating.ifcx' },
]);

// Wall now has FireRating property from overlay
const wallProps = result.properties.getForEntity(wallId);
```