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: BulkEntry.m
    path of file: ./repos/NASTRAN_CoFE/nastran_cofe/nastran_input_processors
    
    the code of the file until where you have to start completion: % Abstract superclass for Nastran Bulk Data input entries
% Anthony Ricciardi
%
classdef (Abstract) BulkEntry < matlab.mixin.Heterogeneous
    methods (Abstract)
        % The class constructor must i
    
function bulkEntry = constructFromFields_sub(bulkDataFields)
            % Read input fields and create heterogeneous entry array from input data
            nBulkDataFields = size(bulkDataFields,1);
            bulkEntryCell = cell(nBulkDataFields,1); % temporary cell
            for i = 1:nBulkDataFields
                fields = bulkDataFields{i};
                % convert field 1 to case-sensitive class name
                entryName =  lower(fields{1});
                entryName(1) = upper(entryName(1));
                if strcmp(entryName(end