private void checkPrivileges(User user) {
		    List<String> requiredPrivs = new ArrayList<>();
		    for (Role r : user.getAllRoles()) {
		        checkSuperUserPrivilege(r);
		        Iterable<Privilege> privileges = r.getPrivileges() != null ? r.getPrivileges() : Collections.emptySet();
		        for (Privilege p : privileges) {
		            if (!Context.hasPrivilege(p.getPrivilege())) {
		                requiredPrivs.add(p.getPrivilege());
		            }
		        }
		    }
		    if (requiredPrivs.size() == 1) {
		        throw new APIException("User.you.must.have.privilege", new Object[] { requiredPrivs.get(0) });
		    } else if (requiredPrivs.size() > 1) {
		        throw new APIException(String.format(ERROR_FORMAT, String.join(", ", requiredPrivs)));
		    }
		}

		private void checkSuperUserPrivilege(Role r) {
		    if(r.getRole().equals(RoleConstants.SUPERUSER)
		            && !Context.hasPrivilege(PrivilegeConstants.ASSIGN_SYSTEM_DEVELOPER_ROLE)) {
		        throw new APIException("User.you.must.have.role", new Object[] { RoleConstants.SUPERUSER });
		    }
		}