src/main/java/com/passkit/grpc/SingleUseCoupons/Offer.java
public Builder addValidCodes(
          java.lang.String value) {
        if (value == null) {
    throw new NullPointerException();
  }
  ensureValidCodesIsMutable();
        validCodes_.add(value);
        onChanged();
        return this;
      }
/**
       * <pre>
       * Optional array of valid codes that can be input on redemption.
       * </pre>
       *
       * <code>repeated string validCodes = 1;</code>
       * @param value The validCodes to add.
       * @return This builder for chaining.
       */

Optional array of valid codes that can be input on redemption.

repeated string validCodes = 1;
@param value The validCodes to add.
@return This builder for chaining.
Optional array of valid codes that can be input on redemption . repeated string validCodes = 1 ; @param value The validCodes to add . @return This builder for chaining .
public Builder addValidCodes(
          java.lang.String value) {
        if (value == null) {
    throw new NullPointerException();
  }
  ensureValidCodesIsMutable();
        validCodes_.add(value);
        onChanged();
        return this;
      }
public Builder addValidCodes ( java . lang . String value ) { if ( value == null ) { throw new NullPointerException ( ) ; } ensureValidCodesIsMutable ( ) ; validCodes_ . add ( value ) ; onChanged ( ) ; return this ; }
<pre>
 Optional array of valid codes that can be input on redemption.
<pre > Optional array of valid codes that can be input on redemption .