Class AffineTransformBuilder

const transform =
    SlidesApp.newAffineTransformBuilder().setScaleX(2.0).setShearY(1.1).build();

// The resulting transform matrix is
//  [ 2.0   0.0   0.0 ]
//  [ 1.1   1.0   0.0 ]
//  [  0     0     1  ]
}