code/model/Blog.php
public function getBlogPosts() {
		$blogPosts = BlogPost::get()->filter("ParentID", $this->ID);
		//Allow decorators to manipulate list
		$this->extend('updateGetBlogPosts', $blogPosts);
		return $blogPosts;
	}
public function getBlogPosts() {
		$blogPosts = BlogPost::get()->filter("ParentID", $this->ID);
		//Allow decorators to manipulate list
		$this->extend('updateGetBlogPosts', $blogPosts);
		return $blogPosts;
	}
Return blog posts

@return DataList of BlogPost objects