src/main/java/com/passkit/grpc/Image.java
public Builder clearStampImage() {
        
        stampImage_ = getDefaultInstance().getStampImage();
        onChanged();
        return this;
      }
/**
       * <code>string stampImage = 20;</code>
       * @return This builder for chaining.
       */
string stampImage = 20;
@return This builder for chaining.
string stampImage = 20 ; @return This builder for chaining .
public Builder clearStampImage() {
        stampImage_ = getDefaultInstance().getStampImage();
        onChanged();
        return this;
      }
public Builder clearStampImage ( ) { stampImage_ = getDefaultInstance ( ) . getStampImage ( ) ; onChanged ( ) ; return this ; }
<code>string stampImage = 20;</code>
 @return This builder for chaining.
<code > string stampImage = 20 ; < / code > @return This builder for chaining .