Cancels asynchronous loading started with load().
Releases resources allocated by the loader.
Returns true if the specified file can be loaded by this loader.
File to load.
Optionalformat: stringFile format string.
Loads a file into the viewer.
File to load.
Optionalformat: stringFile format string.
Optionalparams: LoadParamsLoading parameters.
Defines the file loader for the viewer.