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: updatencschema.m
    path of file: ./repos/CDT/cdt
    
    the code of the file until where you have to start completion: function A = updatencschema(A)
%UPDATENCSCHEMA Checks (and updates) netCDF schema for consistency
%
% B = updatencschema(A)
%
% This function provides a quick check on a netCDF schema structure to make
% sure the dimensions details of each variable match the dimension details
% of the file.  This allows one to quickly propagate dimension details to
% all variables that require them.
%
% Input variables:
%
%   A:  netCDF file structure (see ncinfo, ncwriteschema)
%
% Output variables:
%

    
function A = updatencschema(A)
%UPDATENCSCHEMA Checks (and updates) netCDF schema for consistency
%
% B = updatencschema(A)
%
% This function provides a quick check on a netCDF schema structure to make
% sure the dimensions details of each variable match the dimension details
% of the file.  This allows one to quickly propagate dimension details to
% all variables that require them.
%
% Input variables:
%
%   A:  netCDF file structure (see ncinfo, ncwriteschema)
%
% Output variables:
%
%   B:  same as input A, except the Dimensions fields of all variables will
%       be updated to reflect the details in the main file Dimensions
%       structure.

% Copyright 2017 Kelly Kearney

validateattributes(A, {'struct'}, {'nonempty'});

for iv = 1:length(A.Variables)
    if ~isempty(A.Variables(iv).Dimensions)
        
        % Match up dimensions structures
        
        [tf, loc] = ismember({A.Variables(iv).Dimensions.Name}, {A.Dimensions.Name});
        if ~all(tf)
            str = sprintf('%s, ', A.Variables(iv).Dimensions(~tf).Name);
            
            error('Variable dimension name does not match file dimension names:\n  variable: %s\n  dimensions: %s', ...
                A.Variables(iv).Name, str(1:end