anchor.diff:  
   import chameleon.core.reference.CrossReference;
   
  -import chameleon.core.statement.Block;
  -import chameleon.core.statement.Statement;
  +import chameleon.oo.statement.Block;
  +import chameleon.oo.statement.Statement;
   
   import chameleon.oo.modifier.AnnotationModifier;
   
  
positive.code: 
  import chameleon.core.compilationunit.CompilationUnit;
  
  import chameleon.core.declaration.SimpleNameDeclarationWithParametersSignature;
  import chameleon.core.declaration.SimpleNameDeclarationWithParametersHeader;
  import chameleon.core.declaration.SimpleNameSignature;
  import chameleon.core.declaration.Signature;
  import chameleon.core.declaration.QualifiedName;
  
negative.code: import chameleon.oo.type.generics.SuperWildcard;
  import chameleon.oo.type.inheritance.SubtypeRelation;
  
  import chameleon.oo.variable.Variable;
  import chameleon.oo.variable.FormalParameter;
  import chameleon.oo.variable.VariableDeclaration;
  import chameleon.oo.variable.VariableDeclarator;
  
  import chameleon.input.InputProcessor;
  import chameleon.input.Position2D;
  