code: public SMBFileShareInfo withInvalidUserList(String... invalidUserList) {
          if (this.invalidUserList == null) {
              setInvalidUserList(new com.amazonaws.internal.SdkInternalList<String>(invalidUserList.length));
          }
          for (String ele : invalidUserList) {
              this.invalidUserList.add(ele);
          }
          return this;
      }
docs: <p>
  A list of users or groups in the Active Directory that are not allowed to access the file share. A group must be
  prefixed with the @ character. For example <code>@group1</code>. Can only be set if Authentication is set to
  <code>ActiveDirectory</code>.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setInvalidUserList(java.util.Collection)} or {@link #withInvalidUserList(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param invalidUserList
  A list of users or groups in the Active Directory that are not allowed to access the file share. A group
  must be prefixed with the @ character. For example <code>@group1</code>. Can only be set if Authentication
  is set to <code>ActiveDirectory</code>.
  @return Returns a reference to this object so that method calls can be chained together.