private com.google.protobuf.MapField<java.lang.String, java.lang.String>
      internalGetUserEnvVars() {
    if (userEnvVars_ == null) {
      return com.google.protobuf.MapField.emptyMapField(UserEnvVarsDefaultEntryHolder.defaultEntry);
    }
    return userEnvVars_;
  }
<pre>
Optional. Describes the level of platform logging to apply to calls and
call responses during executions of this workflow. If both the workflow and
the execution specify a logging level, the execution level takes
precedence.
</pre>

<code>
.google.cloud.workflows.v1.Workflow.CallLogLevel call_log_level = 13 [(.google.api.field_behavior) = OPTIONAL];
</code>

@return The callLogLevel.
java-workflows/proto-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/Workflow.java