public Builder clearConstraintType() {
      bitField0_ = (bitField0_ & ~0x00000001);
      constraintType_ = 0;
      onChanged();
      return this;
    }
<pre>
Describes the different types of constraints that are applied.
</pre>

<code>.google.cloud.speech.v2.AccessMetadata.ConstraintType constraint_type = 1;</code>

@return This builder for chaining.
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/AccessMetadata.java