def create_grid(bm: 'bmesh.types.BMesh', x_segments: int, y_segments: int,
    size: float, matrix: 'mathutils.Matrix', calc_uvs: bool) ->dict:
    """Creates a grid with a variable number of subdivisions 

    :param bm: The bmesh to operate on. 
    :type bm: 'bmesh.types.BMesh'
    :param x_segments: number of x segments 
    :type x_segments: int
    :param y_segments: number of y segments 
    :type y_segments: int
    :param size: size of the grid 
    :type size: float
    :param matrix: matrix to multiply the new geometry with 
    :type matrix: 'mathutils.Matrix'
    :param calc_uvs: calculate default UVs 
    :type calc_uvs: bool
    :return:  verts: output vertstype list of (bmesh.types.BMVert) 
    """
    pass
