Add a URL element that should be used to
discover new Eclipse features. This
method may throw a CoreException if
the model is not editable.
Parameters: discovery - a new discovery URL element
Remove a URL element that should be used to
discover new Eclipse features. This
method may throw a CoreException if
the model is not editable.
Parameters: discovery - a discovery URL element to remove
Sets a URL element that should be used to
update Eclipse features. This
method may throw a CoreException if
the model is not editable.
Parameters: update - a new update URL element or null