Bug 15726 moves field comments from one field to another [quick fix]
20020508 public class A { int field; //field comment A(int fred){ _fred= fred; } } you are offered to create field _fred but then it steals the comment: int field; private int _fred; //field comment
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/astrewrite/ASTRewritingStatementsTest.java
IPackageFragment pack1= fSourceFolder.createPackageFragment("test1", false, null);
		StringBuffer buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E {\n");
		buf.append("    public void foo() {\n");
		buf.append("        class A {\n");
		buf.append("        }\n");
		buf.append("    }\n");
		buf.append("}\n");	
		ICompilationUnit cu= pack1.createCompilationUnit("E.java", buf.toString(), false, null);
		
		CompilationUnit astRoot= AST.parseCompilationUnit(cu, false);
		ASTRewrite rewrite= new ASTRewrite(astRoot);
		
		AST ast= astRoot.getAST();
		
		TypeDeclaration type= findTypeDeclaration(astRoot, "E");
		MethodDeclaration methodDecl= findMethodDeclaration(type, "foo");
		Block block= methodDecl.getBody();
		assertTrue("Parse errors", (block.getFlags() & ASTNode.MALFORMED) == 0);
		
		List statements= block.statements();
		assertTrue("Number of statements not 1", statements.size() == 1);
		{ 
			TypeDeclarationStatement stmt= (TypeDeclarationStatement) statements.get(0);
			
			TypeDeclaration newDeclaration= ast.newTypeDeclaration();
			newDeclaration.setName(ast.newSimpleName("X"));
			newDeclaration.setInterface(true);