code: public void setAddAllowedPrincipals(java.util.Collection<String> addAllowedPrincipals) {
          if (addAllowedPrincipals == null) {
              this.addAllowedPrincipals = null;
              return;
          }
  
          this.addAllowedPrincipals = new com.amazonaws.internal.SdkInternalList<String>(addAllowedPrincipals);
      }
docs: <p>
  The Amazon Resource Names (ARN) of one or more principals. Permissions are granted to the principals in this
  list. To grant permissions to all principals, specify an asterisk (*).
  </p>
  
  @param addAllowedPrincipals
  The Amazon Resource Names (ARN) of one or more principals. Permissions are granted to the principals in
  this list. To grant permissions to all principals, specify an asterisk (*).