public Map<String, String> getConfigurationProperties(String configurationType) {
    return m_configurations.get(configurationType);
  }
Gets the configuration properties for the specified type. If the type does
not exist, this will return {@code null}.

@param configurationType
         the configuration type to retrieve.
@return the property name and value pairs for the configuration type, or
        {@code null} if no configuration type exists.
ambari-server-spi/src/main/java/org/apache/ambari/spi/ClusterInformation.java