connector/src/main/java/org/jboss/as/connector/util/AbstractParser.java
public String rawAttributeText(XMLStreamReader reader, String attributeName) {
        return rawAttributeText(reader, attributeName, null);
    }
public String rawAttributeText(XMLStreamReader reader, String attributeName) {
        return rawAttributeText(reader, attributeName, null);
    }
Reads and trims the text for the given attribute and returns it or {@code null}

@param reader source for the attribute text
@param attributeName  the name of the attribute
@return the string representing trimmed attribute text or {@code null} if there is none