Created attachment 164165 [details]
Minimal project with the sources. Lombok library should be configured in the project.

With:
  - Netbeans 8.2, 
  - Lombok 1.16.10, 
  - Enable Annotation Processing in Editor enabled

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Having a simple class, and interface:

public interface IRefactoringTest {
}

public class RefactoringTestImpl implements IRefactoringTest{
    @Getter @Setter private String testString;        
}

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When pulling the Lombok generated getter/setter methods to the interface:

Refactor -> Pull Up (Ctrl+Alt+Shift-U)

The Lombok generated functions are presented in the list, can be selected for refactoring, but refactoring generates the following Exception:

java.lang.NullPointerException
	at org.netbeans.modules.refactoring.java.plugins.PullUpTransformer.addAbstractMemberToTarget(PullUpTransformer.java:188)
	at org.netbeans.modules.refactoring.java.plugins.PullUpTransformer.addMembersToTarget(PullUpTransformer.java:133)
	at org.netbeans.modules.refactoring.java.plugins.PullUpTransformer.visitClass(PullUpTransformer.java:107)
	at org.netbeans.modules.refactoring.java.plugins.PullUpTransformer.visitClass(PullUpTransformer.java:82)
	at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:782)
	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:72)
...