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'use strict';
module.exports = function checkEmbeddedDiscriminatorKeyProjection(userProjection, path, schema, selected, addedPaths) {  const userProjectedInPath = Object.keys(userProjection).    reduce((cur, key) => cur || key.startsWith(path + '.'), false);  const _discriminatorKey = path + '.' + schema.options.discriminatorKey;  if (!userProjectedInPath &&      addedPaths.length === 1 &&      addedPaths[0] === _discriminatorKey) {    selected.splice(selected.indexOf(_discriminatorKey), 1);  }};