src/vs/platform/files/common/diskFileSystemProviderClient.ts/DiskFileSystemProviderClient/capabilities
class DiskFileSystemProviderClient:	get capabilities(): FileSystemProviderCapabilities {
		if (!this._capabilities) {
			this._capabilities =
				FileSystemProviderCapabilities.FileReadWrite |
				FileSystemProviderCapabilities.FileOpenReadWriteClose |
				FileSystemProviderCapabilities.FileReadStream |
				FileSystemProviderCapabilities.FileFolderCopy |
				FileSystemProviderCapabilities.FileWriteUnlock |
				FileSystemProviderCapabilities.FileAtomicRead |
				FileSystemProviderCapabilities.FileClone;

			if (this.extraCapabilities.pathCaseSensitive) {
				this._capabilities |= FileSystemProviderCapabilities.PathCaseSensitive;
			}

			if (this.extraCapabilities.trash) {
				this._capabilities |= FileSystemProviderCapabilities.Trash;
			}
		}

		return this._capabilities;
	}