SGradient constructor
      
      SGradient(
    
    
- String aType
 
Implementation
factory SGradient(_i2.String aType) => _i4.callConstructor(
      _declaredSGradient,
      [aType],
    );
factory SGradient(_i2.String aType) => _i4.callConstructor(
      _declaredSGradient,
      [aType],
    );