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.element.Element;
  
  import chameleon.core.expression.Expression;
  import chameleon.core.expression.MethodInvocation;
  import chameleon.core.expression.Literal;
  import chameleon.core.expression.Assignable;
  import chameleon.core.expression.NamedTarget;
  import chameleon.core.expression.NamedTargetExpression;
  import chameleon.core.expression.InvocationTarget;
  import chameleon.core.expression.TargetedExpression;
  import chameleon.core.expression.VariableReference;
  
  import chameleon.core.language.Language;
  
  import chameleon.core.member.Member;
  
  import chameleon.core.method.Method;
  import chameleon.core.method.MethodHeader;
  import chameleon.core.method.SimpleNameMethodHeader;
  import chameleon.core.method.Implementation;
  import chameleon.core.method.RegularImplementation;
  
  import chameleon.core.method.exception.ExceptionClause;
  import chameleon.core.method.exception.TypeExceptionDeclaration;
  
  import chameleon.core.modifier.Modifier;
  
  
negative.code: 
  import chameleon.core.compilationunit.CompilationUnit;
  
  import chameleon.oo.member.SimpleNameDeclarationWithParametersSignature;
  import chameleon.oo.member.SimpleNameDeclarationWithParametersHeader;
  import chameleon.core.declaration.SimpleNameSignature;
  import chameleon.core.declaration.Signature;
  import chameleon.core.declaration.QualifiedName;
  