If the parameter is not specified, the following fields are selected by default: aboutMe, accountEnabled, birthday, businessPhones, city, companyName, country, department, displayName, givenName, hireDate, id, interests, jobTitle, mail, mailNickname, mobilePhone, mySite, officeLocation, pastProjects, postalCode, preferredLanguage, preferredName, responsibilities, schools, skills, state, streetAddress, surname, userPrincipalName, userType.