confluence-axis-soap-plugin-2.1.0.jar - Replace Xwork/webwork usages to xwork2/struts

java.lang.NoClassDefFoundError: com/opensymphony/webwork/ServletActionContext
    at com.atlassian.confluence.rpc.axis.AxisSoapServer.serviceInTransaction(AxisSoapServer.java:129) ~[?:?]
    at com.atlassian.confluence.rpc.axis.AxisSoapServer.access$000(AxisSoapServer.java:32) ~[?:?]
    at com.atlassian.confluence.rpc.axis.AxisSoapServer$1.doInTransaction(AxisSoapServer.java:90) ~[?:?]
    at com.atlassian.confluence.rpc.axis.AxisSoapServer$1.doInTransaction(AxisSoapServer.java:86) ~[?:?]
    at com.atlassian.sal.core.transaction.HostContextTransactionTemplate$1.doInTransaction(HostContextTransactionTemplate.java:21) ~[com.atlassian.sal_sal-core-5.0.1.jar:?]