public Builder clearUser() {
        user_ = getDefaultInstance().getUser();
        bitField0_ = (bitField0_ & ~0x00000040);
        onChanged();
        return this;
      }
<code>optional string user = 7;</code>
@return This builder for chaining.
ql/src/gen/protobuf/gen-java/org/apache/hadoop/hive/ql/hooks/proto/HiveHookEvents.java