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: flip_ears.m
    path of file: ./repos/gptoolbox/mesh
    
    the code of the file until where you have to start completion: function FF = flip_ears(V,F,varargin)
  % FLIP_EARS Flip ears (triangles with two boundary edges)
  %
  % FF = flip_ears(V,F)
  % FF = flip_ears(V,F,'ParameterName',ParameterValue, ...)
  %
  % Inputs:
  %   V  #V by 3 list of mesh vertices
  %   F  #F by 3 list of triangle mesh indices
  %   Optional:
  %     'PlanarOnly' followed by whether to flip only if ears and their flops
  %       form a planar quad. {false}
  %     'PlanarEpsilon' Epsilon used to determine planarity {1e-8}.
  %     'FlipAndClip' followed by whether to Flip ears then clip any new ears,
  %       then repeat until convergence {false}
  % Outputs:
  %   FF  #F by 3 list of new triangle mesh indices
  %
  % Known bugs: (V,F) mmust be manifold near ears.
  %



  % default values
  planar_only = false;
  epsilon = 1e-8;
  flip_and_clip = false;
  % Map of parameter names to variable names
  params_to_variables = containers.Map( ...
    {'PlanarOnly','PlanarEpsilon','FlipAndClip'}, ...
    {'planar_only','epsilon','flip_and_clip'});
  v = 1;
  while v <= numel(varargin)
    param_name = varargin{v};
    if isKey(params_to_variables,param_name)
      assert(v+1<=numel(varargin));
      v = v+1;

    
function FF = flip_ears(V,F,varargin)
  % FLIP_EARS Flip ears (triangles with two boundary edges)
  %
  % FF = flip_ears(V,F)
  % FF = flip_ears(V,F,'ParameterName',ParameterValue, ...)
  %
  % Inputs:
  %   V  #V by 3 list of mesh vertices
  %   F  #F by 3 list of triangle mesh indices
  %   Optional:
  %     'PlanarOnly' followed by whether to flip only if ears and their flops
  %       form a planar quad. {false}
  %     'PlanarEpsilon' Epsilon used to determine planarity {1e-8}.
  %     'FlipAndClip' followed by whether to Flip ears then clip any new ears,
  %       then repeat until convergence {false}
  % Outputs:
  %   FF  #F by 3 list of new triangle mesh indices
  %
  % Known bugs: (V,F) mmust be manifold near ears.
  %



  % default values
  planar_only = false;
  epsilon = 1e-8;
  flip_and_clip = false;
  % Map of parameter names to variable names
  params_to_variables = containers.Map( ...
    {'PlanarOnly','PlanarEpsilon','FlipAndClip'}, ...
    {'planar_only','epsilon','flip_and_clip'});
  v = 1;
  while v <= numel(varargin)
    param_name = varargin{v};
    if isKey(params_to_variables,param_name)
      assert(v+1<=numel(varargin));
      v = v+1;
      % Trick: use feval on anonymous function to use assignin to this workspace 
      feval(@()assignin('caller',params_to_variables(param_name),varargin{v}));
    else
      error('Unsupported parameter: %s',varargin{v});
    end