How to remove a specific anchor in tinyMCE?

Question

JavaScript

It is necessary to remove a specific anchor (has a unique id and name) in the editor.

The default editor button (unlink) removes the link in the selected text fragment.
If we refer to the function tinyMCE.execCommand('unlink',false,null); then it will remove all links in the paragraph where the cursor is currently located.

I need to click on an element (has a unique id) outside the editor to remove the corresponding anchor in the editor.

I thought in the direction of find & replace, but this does not work with the source code of the text in the editor, but only with the text itself.

Answer 1

I asked myself, I will answer.
document.getElementById('text_ifr').contentWindow.document.body.innerHTML and remove the link