No option to update vector model

There is no option to update the vector model in vectorMasterDrawable. There should be option to update the viewport width and height etc.

Start by locating the VectorMasterDrawable class and reading how its vector model and viewport dimensions are currently represented. Define the expected update behavior for the model, viewport width, and height, then verify that these values can be changed after creation without breaking existing drawable behavior.

Written by the indexing model from the issue text.