@Override
    public boolean checkIfWorkspaceExists(@NonNull String id) {
        ensureThreadExistense();
        return backingMap.get().containsKey(id);
    }
@ Override public boolean checkIfWorkspaceExists ( @ NonNull String id ) { ensureThreadExistense ( ) ; return backingMap . get ( ) . containsKey ( id ) ; }
This method checks, if Workspace with a given Id was created before this call

@param id
@return