private void ensureAllowIsMutable() {
      if (!allow_.isModifiable()) {
        allow_ = new com.google.protobuf.LazyStringArrayList(allow_);
      }
      bitField0_ |= 0x00000002;
    }
<pre>
The namespace name.
</pre>

<code>string namespace_name = 1;</code>

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