docs: public void setAddAllowedPrincipals(java.util.Collection<String> addAllowedPrincipals) {
          if (addAllowedPrincipals == null) {
              this.addAllowedPrincipals = null;
              return;
          }
  
          this.addAllowedPrincipals = new com.amazonaws.internal.SdkInternalList<String>(addAllowedPrincipals);
      }