public Builder setNullable(boolean value) {

      nullable_ = value;
      bitField0_ |= 0x00000010;
      onChanged();
      return this;
    }
<pre>
Optional. Indicates if the value may be null.
</pre>

<code>bool nullable = 6 [(.google.api.field_behavior) = OPTIONAL];</code>

@param value The nullable to set.
@return This builder for chaining.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Schema.java