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: constraintClass.m
    path of file: ./repos/WEC-Sim/source/objects
    
    the code of the file until where you have to start completion: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Copyright 2014 National Renewable Energy Laboratory and National 
% Technology & Engineering Solution
    
function obj = setOrientation(obj)
            % This method calculates the constraint ``x`` vector and ``rotationMatrix`` matrix in the ``orientation`` structure based on user input.
            obj.orientation.z = obj.orientation.z / norm(obj.orientation.z);
            obj.orientation.y = obj.orientation.y / norm(obj.orientation.y);
            z = obj.orientation.z;
            y = obj.orientation.y;
            if abs(dot(y,z))>0.001
                error('The Y and Z vectors defining the constraint''s orientation must be orthogonal.')
            end