public String getPragmaHTTPResponseHeader() {
    return getProperty(HTTP_PRAGMA_HEADER_VALUE);
  }
Get the value that should be set for the <code>Pragma</code> HTTP response header for Ambari Server UI.
<p/>
By default this will be <code>no-cache</code>. For example:
<p/>
<code>
Pragma: no-cache
</code>

@return the Pragma value - null or "" indicates that the value is not set
ambari-server/src/main/java/org/apache/ambari/server/configuration/Configuration.java