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: spm_mix_plot2d.m
    path of file: ./repos/bspm/thirdparty/spm12/toolbox/mixture
    
    the code of the file until where you have to start completion: function [] = spm_mix_plot2d (mix,area,nContLines,LineType,min_p,max_p)
% Plot component density contours for 2D mixture model

    
function [] = spm_mix_plot2d (mix,area,nContLines,LineType,min_p,max_p)
% Plot component density contours for 2D mixture model
% FORMAT [] = spm_mix_plot2d (mix,area,nContLines,LineType,min_p,max_p)
%
% mix           Mixture model data structure
% area          [xmin,xmax,ymin,ymax]
% nContLines    Number of contour lines; default=10
% LineType      Plot line type; default='-'
% min_p/max_p   Values of min and max probability contours
%_______________________________________________________________________
% Copyright (C) 2008 Wellcome Trust Centre for Neuroimaging

% Will Penny 
% $Id: spm_mix_plot2d.m 5647 2013-09-20 13:03:44Z ged $

if nargin < 2 | isempty(area), area=[0 10 0 10]; end