src/main/java/com/passkit/grpc/Distribution.java
public Builder clearValidation() {
        
        validation_ = getDefaultInstance().getValidation();
        onChanged();
        return this;
      }
/**
       * <pre>
       * A regex which allows you to set set custom validation rules for the data stored.
       * </pre>
       *
       * <code>string validation = 9;</code>
       * @return This builder for chaining.
       */

A regex which allows you to set set custom validation rules for the data stored.

string validation = 9;
@return This builder for chaining.
A regex which allows you to set set custom validation rules for the data stored . string validation = 9 ; @return This builder for chaining .
public Builder clearValidation() {
        validation_ = getDefaultInstance().getValidation();
        onChanged();
        return this;
      }
public Builder clearValidation ( ) { validation_ = getDefaultInstance ( ) . getValidation ( ) ; onChanged ( ) ; return this ; }
<pre>
 A regex which allows you to set set custom validation rules for the data stored.
<pre > A regex which allows you to set set custom validation rules for the data stored .