public Builder setTarget(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      target_ = value;
      bitField0_ |= 0x00000004;
      onChanged();
      return this;
    }
<pre>
Target of the operation - for example
projects/project-1/connectivityTests/test-1
</pre>

<code>string target = 3;</code>

@param value The target to set.
@return This builder for chaining.
java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/OperationMetadata.java