src/vs/platform/files/common/ipcFileSystemProvider.ts/IPCFileSystemProvider/setCaseSensitive
class IPCFileSystemProvider:	protected setCaseSensitive(isCaseSensitive: boolean) {
		if (isCaseSensitive) {
			this._capabilities |= FileSystemProviderCapabilities.PathCaseSensitive;
		} else {
			this._capabilities &= ~FileSystemProviderCapabilities.PathCaseSensitive;
		}

		this._onDidChangeCapabilities.fire(undefined);
	}