code: protected String getResourceTypeFromProperties(Map<String, PropertyData<?>> properties, String defaultValue) {
  
          PropertyData<?> typeProp = properties.get(CmsCmisTypeManager.PROPERTY_RESOURCE_TYPE);
          String resTypeName = defaultValue;
          if (typeProp != null) {
              resTypeName = (String)typeProp.getFirstValue();
          }
          return resTypeName;
      }
docs: Extracts the resource type from a set of CMIS properties.<p>
  
  @param properties the CMIS properties
  @param defaultValue the default value
  
  @return the resource type property, or the default value if the property was not found