code: public java.util.List<AllowedPrincipal> getAllowedPrincipals() {
          if (allowedPrincipals == null) {
              allowedPrincipals = new com.amazonaws.internal.SdkInternalList<AllowedPrincipal>();
          }
          return allowedPrincipals;
      }
docs: <p>
  Information about one or more allowed principals.
  </p>
  
  @return Information about one or more allowed principals.