// Create an AST containing an annotation.
Document doc = new Document("class X {\n@Anno()\npublic void action() {}\n");
ASTParser parser = ASTParser.newParser(AST.JLS3);
parser.setSource(doc.get().toCharArray());
CompilationUnit cu = (CompilationUnit) parser.createAST(null);
cu.recordModifications();
AST ast = cu.getAST();

// Create a member value pair to add to the annotation.
MemberValuePair pair = ast.newMemberValuePair();
pair.setName(ast.newSimpleName("value"));
StringLiteral value = ast.newStringLiteral();
value.setLiteralValue("string");
pair.setValue(value);

// Add the member value pair to the annotation.
TypeDeclaration type = (TypeDeclaration) cu.types().get(0);
MethodDeclaration method = type.getMethods()[0];
NormalAnnotation anno = (NormalAnnotation) method.modifiers().get(0);
anno.values().add(pair);

// Fails with a CoreException regarding end of file
cu.rewrite(doc, null);