ConfigurationManager.getResourceConfiguration(<resource id>) return null

Issue

• I wonder why ConfigurationManager.getResourceConfiguration() returns null instead of information about the resource configurations?
• When I try to call ConfigurationManager.getResourceConfiguration() for EAP 4 and 5 and to get server-name value I get configuration null;
• I try to get server name unsuccessfully in the following way:

$ var resources2 = ResourceManager.findResourcesByCriteria(criteria2);
$ pretty.print(resources2)
id    name               version   currentAvailabilit resourceType

58265  EAP test.com default        EAP 5.2.0 UP                 JBossAS Server
$ ConfigurationManager.getResourceConfiguration(58265)
Configuration [162835] - null

• How can i fix this or is there any other option to get the server-name value ?