docs: public ArrayList<BoxCollaboration.Role> getAllowedInviteeRoles() {
          if (mCachedAllowedInviteeRoles != null){
              return mCachedAllowedInviteeRoles;
          }
          ArrayList<String> roles = getPropertyAsStringArray(FIELD_ALLOWED_INVITEE_ROLES);
          if (roles == null){
              return null;
          }
          mCachedAllowedInviteeRoles = new ArrayList<BoxCollaboration.Role>(roles.size());
          for (String role : roles){
              mCachedAllowedInviteeRoles.add(BoxCollaboration.Role.fromString(role));
          }
          return mCachedAllowedInviteeRoles;
      }