@java.lang.Override
  public boolean containsMigrationResourcesUserTags(java.lang.String key) {
    if (key == null) {
      throw new NullPointerException("map key");
    }
    return internalGetMigrationResourcesUserTags().getMap().containsKey(key);
  }
<pre>
User specified tags to add to every M2VM generated resource in AWS.
These tags will be set in addition to the default tags that are set as part
of the migration process. The tags must not begin with the reserved prefix
`m2vm`.
</pre>

<code>map&lt;string, string&gt; migration_resources_user_tags = 8;</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/AwsSourceDetails.java