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: CatKeySqInNoDiag.m
    path of file: ./repos/d4m/matlab_src
    
    the code of the file until where you have to start completion: function AB = CatKeySqInNoDiag(A);
% Perform matrix multiply and concatenate colliding row/col keys into the value.
  
   B = A;   A = transpose(A);


  if ((IsClass(A,'Assoc') && ischar(Col(A))) && (IsClass(B,'Assoc') && ischar(Row(B))))
    AB = Abs0(A)*Abs0(B);
    AB = putAdj(AB,Adj(AB) - diag(diag(Adj(AB))));
    AB = AB(find(sum(Adj(AB),2)),find(sum(Adj(AB),1)).');

    % Trim down to just what we need.
    A1 = A(Row(AB),:);     B1 = B(:,Col(AB));
    A2 = A1(:,Row(B1));    B2 = B1(Col(A1),:);
    A2size = size(A2);     B2size = size(B2);

    A2adj = Adj(A2);
    A2colMat = Str2mat(Col(A2));

    B2adj = Adj(B2);
    clear A1 A2 B1 B2


    
function AB = CatKeySqInNoDiag(A);
% Perform matrix multiply and concatenate colliding row/col keys into the value.
  
   B = A;   A = transpose(A);


  if ((IsClass(A,'Assoc') && ischar(Col(A))) && (IsClass(B,'Assoc') && ischar(Row(B))))
    AB = Abs0(A)*Abs0(B);
    AB = putAdj(AB,Adj(AB) - diag(diag(Adj(AB))));
    AB = AB(find(sum(Adj(AB),2)),find(sum(Adj(AB),1)).');

    % Trim down to just what we need.
    A1 = A(Row(AB),:);     B1 = B(:,Col(AB));
    A2 = A1(:,Row(B1));    B2 = B1(Col(A1),:);
    A2size = size(A2);     B2size = size(B2);

    A2adj = Adj(A2);
    A2colMat = Str2mat(Col(A2));

    B2adj = Adj(B2);
    clear A1 A2 B1 B2

    v = zeros(0,1);
    % Loop over each column of B2.
    for i = 1:B2size(2)

       % Get columns that have a collision with B2col rows.
       [rrr tmp tmp] = find(B2adj(:,i));       
       [rrrr vvvv tmp] = find(A2adj(:,rrr));
%       [rrrr vvvv tmp] = find(A2adj(:,rrr(rrr ~= i)));
       [tmp rrrri] = sort(rrrr);
       vv = rrr(vvvv(rrrri));

       % Append