private boolean isMinimal() {
    String minimal = m_uriInfo.getQueryParameters().getFirst(QueryLexer.QUERY_MINIMAL);
    return minimal != null && minimal.equalsIgnoreCase("true");
  }
Check to see if 'minimal_response=true' is specified in the query string.

@return true if 'minimal_response=true' is specified, false otherwise
ambari-server/src/main/java/org/apache/ambari/server/api/services/BaseRequest.java