bis_get_attachment_picture doesn’t have cropping for default image

bis_get_attachment_picture doesn’t support cropping for default image, which is required in my case. I wrote custom function by modifying bis_get_attachment_picture. Instead of number you can pass “default” as break-point and it is used as default settings . Maybe you can add it to the plugin code, here is my code:

function custom_bis_get_attachment_picture( $attachment_id = 0, $sizes = array(), $attr = array() ){
	if( $attachment_id < 1 || ! is_array( $sizes ) || count( $sizes ) === 0 ){
		return '';
	}
	ksort( $sizes );
	$last_breakpoint = 0;
	$html = '<picture>';
	$default_srcset = "";
	foreach( $sizes as $breakpoint => $data ){
		if( (intval( $breakpoint ) || $breakpoint == 'default') && count( $data ) >= 2 ){
			$img = bis_get_attachment_image_src( $attachment_id, array( $data[0], $data[1] ), isset( $data[2] ) ? $data[2] : false );
			if( $img ){
				if( isset( $attr['retina'] ) && $attr['retina'] ){
					$retina = bis_get_attachment_image_src( $attachment_id, array( $data[0] * 2, $data[1] * 2 ), isset( $data[2] ) ? $data[2] : false );
					$srcset = $img['src'] . ' 1x, ' . $retina['src'] . ' 2x';
				}else{
					$srcset = $img['src'];
				}
				if ($breakpoint == 'default') {
					$default_srcset = $srcset;
				} else {
					$html .= '<source media="(max-width:' . intval( $breakpoint ) . 'px)" srcset="' . $srcset . '">';
					$last_breakpoint = intval( $breakpoint );
				}
			}
		}
	}
	$html .= '<source media="(min-width:' . ( $last_breakpoint + 1 ) . 'px)" srcset="' . (empty($default_srcset) ? wp_get_attachment_url( $attachment_id ) : $default_srcset) . '">';
	if (empty($default_srcset)) {
		$html .= wp_get_attachment_image( $attachment_id, 'full', false, $attr );
	} else {
		$html .= bis_get_attachment_image($attachment_id, [$sizes['default'][0], $sizes['default'][1]], $sizes['default'][2], $attr);
	}
	$html .= '</picture>';
	return apply_filters( 'bis_get_attachment_picture', $html, $attachment_id, $sizes, $attr );
}