Icons for border-radius in the custom component

Support
#1

Hi,

I wonder what I should use to get the native CS icons for border radius?

  "border-radius"		: {
    "type"						: "group",
    "label"						: "Скругления",
    "params"					: {
    	"toggle"    			: {
        "type"    			: "toggle",
        "label"   			: "Включить",
        "initial"				: "true",
        "on"      			: "true",
        "off"     			: "false"
    	},
    	"top-left"			: {
    		"type"					: "border-radius",
    		"label"					: "Сверху слева",
    		"labelBefore"		: "css:top-left",
    		"initial"				: "8px",
    		"isVar"					: true,
    	  "when"    		  : "not(eq(toggle, 'false'))"
    	},
    	"top-right"			: {
    		"type"					: "border-radius",
    		"label"					: "Сверху справа",
    		"labelBefore"		: "css:top-right",
    		"initial"				: "8px",
    		"isVar"					: true,
    	  "when"    		  : "not(eq(toggle, 'false'))"
  		},
    	"bottom-right"	: {
    		"type"					: "border-radius",
    		"label"					: "Снизу справа",
    		"labelBefore"		: "css:bottom-right",
    		"initial"				: "8px",
    		"isVar"					: true,
    	  "when"    		  : "not(eq(toggle, 'false'))"
  		},
    	"bottom-left"		: {
    		"type"				  : "border-radius",
    		"label"					: "Снизу слева",
    		"labelBefore"		: "css:bottom-left",
    		"initial"				: "8px",
    		"isVar"					: true,
    	  "when"    	  	: "not(eq(toggle, 'false'))"
  			}
  	}
  }