Hmm. still problems with the method

package com.example;

import java.util.Date;

public class BlogPost {
    private String mAuthor;
    private String mTitle;
    private String mBody;
    private String mCategory;
    private Date mCreationDate;

    public BlogPost(String author, String title, String body, String category, Date creationDate) {
      mAuthor = author;
      mTitle = title;
      mBody = body;
      mCategory = category;
      mCreationDate = creationDate;
    }

    public String getAuthor() {
      return mAuthor;
    }

    public String getTitle() {
      return mTitle;
    }

    public String getBody() {
      return mBody;
    }

    public String getCategory() {
      return mCategory;
    }

    public Date getCreationDate() {
      return mCreationDate;
    }
}

import com.example.BlogPost;

public class TypeCastChecker {
  /***************
  I have provided 2 hints for this challenge.
  Change `false` to `true` in one line below, then click the "Check work" button to see the hint.
  NOTE: You must set all the hints to false to complete the exercise.
  ****************/
  public static boolean HINT_1_ENABLED = false;
  public static boolean HINT_2_ENABLED = false;

  public static String getTitleFromObject(Object obj) {
    // Fix this result variable to be the correct string.
   String result = "";
    if (obj instanceof String) {
     //If this code block is entered you know obj is a String. Downcast from Object to String.
    result = (String) obj;   
    } 
    else if (obj instanceof BlogPost) {
    //Similarly, if this code block is entered you know obj is a BlogPost. Downcast from Object to BlogPost.
    BlogPost blogPost = (BlogPost) obj;
    //By downcasting to BlogPost, you now have access to the methods which this class defines. 
    result = String.valueOf(obj); //Which method are you going to use to complete this task???   
    }
    return result;




  }
}