public Builder removeProperties(java.lang.String key) {
      if (key == null) {
        throw new NullPointerException("map key");
      }
      internalGetMutableProperties().ensureBuilderMap().remove(key);
      return this;
    }
<pre>
Optional. SCHEMA FIELDS FOR TYPE OBJECT
Properties of Type.OBJECT.
</pre>

<code>
map&lt;string, .google.cloud.vertexai.v1.Schema&gt; properties = 3 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Schema.java