pferraro/jboss-as — comment on commit e644658859f1165563fadd5236cb9acb989cfd64
File: modcluster/src/main/java/org/jboss/as/modcluster/ModClusterSubsystemXMLReader_1_0.java line 156
By bstansberry:

cont.get(PROXY_LIST).set(ParseUtils.parsePossibleExpression(value));

SimpleAttributeDefinition parseAndSet(...) deals with this.