code: public AdminUpdateUserAttributesRequest withUserAttributes(AttributeType... userAttributes) {
          if (this.userAttributes == null) {
              setUserAttributes(new java.util.ArrayList<AttributeType>(userAttributes.length));
          }
          for (AttributeType ele : userAttributes) {
              this.userAttributes.add(ele);
          }
          return this;
      }
docs: <p>
  An array of name-value pairs representing user attributes.
  </p>
  <p>
  For custom attributes, you must prepend the <code>custom:</code> prefix to the attribute name.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setUserAttributes(java.util.Collection)} or {@link #withUserAttributes(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param userAttributes
  An array of name-value pairs representing user attributes.</p>
  <p>
  For custom attributes, you must prepend the <code>custom:</code> prefix to the attribute name.
  @return Returns a reference to this object so that method calls can be chained together.