ipq_get_theme_image()
Function: Get image HTML for a specific context in a theme, specifying the exact sizes for the image. The first image size is always used as the `src` and the other sizes are used in the `srcset` if they’re the same aspect ratio as the original image. If any of the image sizes don’t currently exist, they are queued for creation by a background process. Example:
classes/library/image-processing-queue/includes/ipq-template-functions.php:26