@Andrei_Dantsou , Thank you for your reply. It works fine now.
But now I see a new problem:
once content component is placed inside this customized parsys, It blocks inserted component and not able to edit.
Below are two images:
First image is after I insert a component "plain HTML render" and second is after I refresh this page:
Before Page Refresh:

After Page Refresh:

Inserted Code for parsys in component:
<div class="cq-placeholder section" data-emptytext="Custom text"></div>
<sly data-sly-resource="${path @ resourceType='/apps/myproject/components/content/parsys'}"></sly>
Thank you in advance.