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: subsref.m
    path of file: ./repos/YALMIP/extras/@lmi
    
    the code of the file until where you have to start completion: function F = subsref(F,Y)
%subsref           Overloaded indexing

switch Y(1).type
    case '()'
        thelmi = Y.subs{1};

    
function F = subsref(F,Y)
%subsref           Overloaded indexing

switch Y(1).type
    case '()'
        thelmi = Y.subs{1};

        % Early bail to optmize code for standard case
        if isa(thelmi,'double') % &(isa(F,'lmi') %

        else
            if ~(isa(F,'lmi') & (isa(thelmi,'logical') | isa(thelmi,'double') | isa(thelmi,'char')))
                error('First argument should be an lmi object and second argument integer or string')
            end