src/vs/workbench/api/common/extHostFileSystemInfo.ts/ExtHostFileSystemInfo/constructor
class ExtHostFileSystemInfo:	constructor() {
		this.extUri = new ExtUri(uri => {
			const capabilities = this._providerInfo.get(uri.scheme);
			if (capabilities === undefined) {
				// default: not ignore
				return false;
			}
			if (capabilities & FileSystemProviderCapabilities.PathCaseSensitive) {
				// configured as case sensitive
				return false;
			}
			return true;
		});
	}