addAppMetaData = function(LUISJSON) {
    let fileContent = '';
    if (LUISJSON.name) fileContent += `> !# @app.name = ${LUISJSON.name}` + NEWLINE;
    if (LUISJSON.desc) fileContent += `> !# @app.desc = ${LUISJSON.desc}` + NEWLINE;
    if (LUISJSON.versionId) fileContent += `> !# @app.versionId = ${LUISJSON.versionId}` + NEWLINE;
    if (LUISJSON.culture) fileContent += `> !# @app.culture = ${LUISJSON.culture}` + NEWLINE;
    if (LUISJSON.luis_schema_version) fileContent += `> !# @app.luis_schema_version = ${LUISJSON.luis_schema_version}` + NEWLINE;
    if (LUISJSON.settings) {
        LUISJSON.settings.forEach(setting => {
            fileContent += `> !# @app.settings.${setting.name} = ${setting.value}` + NEWLINE;
        })
    }
    if (LUISJSON.tokenizerVersion) fileContent += `> !# @app.tokenizerVersion = ${LUISJSON.tokenizerVersion}` + NEWLINE;
    return fileContent === '' ? fileContent : `> LUIS application information` + NEWLINE + fileContent + NEWLINE + NEWLINE;
}
Helper to add application inforamtion metadata
@param {Object} LUISJSON