Design and implement the class PostType which is composed of class textType of the previous homework (i. e. using composition). In addition to the main text which represents the Post part of the postType, the class has a dynamic list of comments ( each element of type text represents the certain comment). Also, the class has the variable postID that represents the number associated with the post. The length of the comments list represents the number of comments and stored in the NumComments integer variable. In addition to the constructor with default parameters and the necessary functions, the function Show() or Print() will print the name of the person that write the post then the post itself followed by the comments of persons on the post (proceeded by the name of person write the comment). You can use the print of textType to print each post and each comment on the post after doing the following modification in Note 1. Also, you need a public function addComment to add comments to the Post with all necessary parameters such as the name the comment. Note 1: modify the class textType such that another variable of type string called Name represents the person who creates or said the text. This new variable must be printed with text in the print function and initiated in the constructor and any necessary modification. Note 2: the design of the class consists of design the UML Class diagram while the implementation consists of the class definition and class implementation (functions definition). Both should be submitted until next Monday during the lecture.