private void ensureAcceptedDataTypeUrisIsMutable() {
        if (!acceptedDataTypeUris_.isModifiable()) {
          acceptedDataTypeUris_ =
              new com.google.protobuf.LazyStringArrayList(acceptedDataTypeUris_);
        }
        bitField0_ |= 0x00000004;
      }
<pre>
The data types of the current input channel.
When this field has more than 1 value, it means this input channel can be
connected to either of these different data types.
</pre>

<code>.google.cloud.visionai.v1.DataType data_type = 2;</code>

@return This builder for chaining.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ProcessorIOSpec.java