description

# CssScale constructor Null safety

CssScale(

1. num x,
2. num y,
3. [num? z]

)

## Implementation

    factory CssScale(num x, num y, [num? z]) {
      if ((y is num) && (x is num) && z == null) {
        return CssScale._create_1(x, y);
      }
      if ((z is num) && (y is num) && (x is num)) {
        return CssScale._create_2(x, y, z);
      }
      throw new ArgumentError("Incorrect number or type of arguments");
    }