code: public java.util.List<String> getServiceNamespaces() {
          if (serviceNamespaces == null) {
              serviceNamespaces = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return serviceNamespaces;
      }
docs: <p>
  The service namespace for the AWS services whose policies you want to list.
  </p>
  <p>
  To learn the service namespace for a service, go to <a
  href="https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_actions-resources-contextkeys.html"
  >Actions, Resources, and Condition Keys for AWS Services</a> in the <i>IAM User Guide</i>. Choose the name of the
  service to view details for that service. In the first paragraph, find the service prefix. For example,
  <code>(service prefix: a4b)</code>. For more information about service namespaces, see <a
  href="https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces"
  >AWS Service Namespaces</a> in the <i>AWS General Reference</i>.
  </p>
  
  @return The service namespace for the AWS services whose policies you want to list.</p>
  <p>
  To learn the service namespace for a service, go to <a href=
  "https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_actions-resources-contextkeys.html"
  >Actions, Resources, and Condition Keys for AWS Services</a> in the <i>IAM User Guide</i>. Choose the
  name of the service to view details for that service. In the first paragraph, find the service prefix.
  For example, <code>(service prefix: a4b)</code>. For more information about service namespaces, see <a
  href=
  "https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces"
  >AWS Service Namespaces</a> in the <i>AWS General Reference</i>.