public ModelAssembler addShapes(Shape... shapes) {
        for (Shape shape : shapes) {
            addShape(shape);
        }
        return this;
    }
Explicitly injects multiple shapes into the assembled model.

@param shapes Shapes to add.
@return Returns the assembler.
smithy-model/src/main/java/software/amazon/smithy/model/loader/ModelAssembler.java