public Builder mergeGcsSource(com.google.cloud.vertexai.api.GcsSource value) {
        if (gcsSourceBuilder_ == null) {
          if (((bitField0_ & 0x00000002) != 0)
              && gcsSource_ != null
              && gcsSource_ != com.google.cloud.vertexai.api.GcsSource.getDefaultInstance()) {
            getGcsSourceBuilder().mergeFrom(value);
          } else {
            gcsSource_ = value;
          }
        } else {
          gcsSourceBuilder_.mergeFrom(value);
        }
        if (gcsSource_ != null) {
          bitField0_ |= 0x00000002;
          onChanged();
        }
        return this;
      }
<pre>
The Cloud Storage location for the input instances.
</pre>

<code>.google.cloud.vertexai.v1.GcsSource gcs_source = 2;</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Examples.java