Bug 15301 'show in packages view' - does not work fo java files not in source folders
20020502 open a java file that is in a resource folder (so it is not an ICompilationUnit - just a file with .java extension) 'show in packages view' is present in the context menu but it does nothing
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/viewsupport/BaseJavaElementContentProvider.java
public BaseJavaElementContentProvider() {
	}
	
	public BaseJavaElementContentProvider(boolean provideMembers, boolean provideWorkingCopy) {
		fProvideMembers= provideMembers;
		fProvideWorkingCopy= provideWorkingCopy;
	}
	
	/**
	 * Returns whether the members are provided when asking
	 * for a CU's or ClassFile's children.
	 */
	public boolean getProvideMembers() {
		return fProvideMembers;
	}
	/**
	 * Sets whether the members are provided from
	 * a working copy of a compilation unit
	 */
	public void setProvideWorkingCopy(boolean b) {
		fProvideWorkingCopy= b;
	}
	/**
	 * Returns whether the members are provided 
	 * from a working copy a compilation unit.
	 */
	public boolean getProvideWorkingCopy() {
		return fProvideWorkingCopy;
	}
	/**