How do I return a custom widget for this tag with classes ?

[balaji101010]

Example

<div class=\"et_pb_module et_pb_testimonial et_pb_testimonial_0 clearfix et_pb_text_align_left et_pb_bg_layout_light et_pb_testimonial_no_image et_pb_testimonial_no_bg\">

I want to render a custom widget for the div tag that must contains et_pb_module et_pb_testimonial et_pb_testimonial_0 clearfix et_pb_text_align_left et_pb_bg_layout_light et_pb_testimonial_no_image et_pb_testimonial_no_bg classes

Is it possible?