private void ensureBytesValIsMutable() {
      if (!bytesVal_.isModifiable()) {
        bytesVal_ = makeMutableCopy(bytesVal_);
      }
      bitField0_ |= 0x00000010;
    }
<pre>
[STRING][google.cloud.aiplatform.v1.Tensor.DataType.STRING]
</pre>

<code>repeated string string_val = 14;</code>

@param value The bytes of the stringVal to add.
@return This builder for chaining.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Tensor.java