public function up(): void 	{ 		Schema::table('markets', function (Blueprint $table) { 			$table->dropColumn('pdv_rate');  			$table->unsignedFloat('primary_pdv_rate')->default(25); 			$table->unsignedFloat('secondary_pdv_rate')->nullable(); 			$table->unsignedFloat('tertiary_pdv_rate')->nullable(); 		}); 	}