@java.lang.Override
    public /* nullable */ java.lang.String getEnvironmentVariablesOrDefault(
        java.lang.String key,
        /* nullable */
        java.lang.String defaultValue) {
      if (key == null) {
        throw new NullPointerException("map key");
      }
      java.util.Map<java.lang.String, java.lang.String> map =
          internalGetEnvironmentVariables().getMap();
      return map.containsKey(key) ? map.get(key) : defaultValue;
    }
<pre>
Environment variables.
</pre>

<code>map&lt;string, string&gt; environment_variables = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AnalyzerDefinition.java