Contributions to this extension point define folding structures for the Java editor. That is, they define the regions of a Java source file that can be folded away. See <code>org.eclipse.jface.text.source.ProjectionViewer</code> for reference. <p> Extensions may optionally contribute a preference block which will appear on the Java editor preference page. </p> The unique identifier of this provider. The name of this provider. If none is given, the id is used instead. An implementation of descent.ui.text.folding.IJavaFoldingStructureProvider An implementation of descent.ui.text.folding.IJavaFoldingPreferenceBlock 3.0 See <code>descent.ui.text.folding.DefaultJavaFoldingStructureProvider</code> for an example. <code>descent.ui.text.folding.DefaultJavaFoldingStructureProvider</code> provides the default folding structure for the Java editor. <code>descent.internal.ui.text.folding.DefaultJavaFoldingPreferenceBlock</code> provides the preference block for the default structure provider. Copyright (c) 2001, 2004 IBM Corporation and others.<br> All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a>