You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: UnfittedMesh_Builder_Factory.m
    path of file: ./repos/Swan/FEM/Mesh/Unfitted/Creationals
    
    the code of the file until where you have to start completion: classdef UnfittedMesh_Builder_Factory < handle
    
    methods (Access = public, Static)
        
        function concreteBuilder = create(type,ndim)
            switch ndim
      
    
function concreteBuilder = create(type,ndim)
            switch ndim
                case 1
                    concreteBuilder = UnfittedMesh_StraightLine();
                case 2
                    switch type
                        case 'INTERIOR'
                            concreteBuilder = UnfittedMesh_FlatSurface();
                        case 'BOUNDARY'
                            concreteBuilder = UnfittedMesh_FlatCurve();
                    end